Here is my semi completed walkthrough for Yu Yu Hakusho - Ghostfiles - Tournament Tactics. If you see any mistake or need any help feel free to pm me or post it here. If you want to jump to a certain spot press Control F on your keyboard.
 
Table of contents:
Basics
Hotel
Forest
Cave
Swamp
Cliff
Hanging Neck
Arena
SPOILER secret area SPOILER
Attack Guide
Conclusion 


Basics:
To start off go to start in the game menu then new game. Then you have to select your character. Move left or right until you are at the character you want then press a. Right now you can only use Yusuke. Now follow the simple in-game tutorial to learn how to play and to learn the story. Map: You command a team of fighters. You get to pick which ones you use after you unlock them. You unlock characters by winning certain levels. You are in a tournament to beat the evil Toguro and his team. You can't let him win! You can also get different items to help you out on your journey. 

After you follow Genkai's tutorial he puts you up against a Ram. Rams are the basic enemies in this game. You will see them often in the hotel levels. Just take your time and Spirit Kick him until he falls. When you level up you get to upgrade your skills. Pick which ones you upgrade wisely. If you upgrade a certain skill enough you will learn more and more attacks. Check the Character guide part of this tutorial for more info and exactly which attacks you learn.
Offence increases your attack power of physical attacks.
Spirit Energy increases power of spirit attacks.
Movement upgrades increases how far you can move each turn.
Power I'm not sure what it does. I think it increases some other stats. 

There are also some stats you might be interested in looking at:

After you defeat the ram you see the world map:

You can't enter the other places until you finish the ones you already unlocked access to. Now just press a and go into battle. This is the first actual battle that isn't a tutorial. I'm still keeping this in the basics section because it will help you get familiar with the gameplay. 

Map:

Simply walk up and do a spirit kick. And then you win... unless you miss or it doesn't do enough damage. In that case just do another spirit kick or two. When you win I strongly recommend upgrading your spirit energy. This will give you the move spirit gun. It is a ranged and very powerful attack. Use it wisely as it uses twice as much energy as the spirit kick. 


Hotel:
The hotel is the first major area of the game. It consists of seven levels. At the end of this area you will get four more party members named Kuwabara, Masked Fighter, Kurama, and Hiei
Map:
 

Level 1: In this level there are two Rams. Just Spirit kick them and they will be gone before  you know it. Keep your distances. If you just walk on out there there is a chance that you can die. That is why it is great to have the spirit gun. Map:  

Levle 2: Map:
There are only three rams here. I suggest having Kuwabara taunt and Yusuke attack. I wouldn't recommend using him. He uses way too much energy for each attack. And he takes a long time for his turn to come up. If you have him taunt the enemies will attack him and not Yusuke. I suggest having Yusuke level up as much as he can. You get exp from each attack and from just participating in the fight. So it might be worth it to have Kuwabara just taunt. If your player dies they come back so no worries. 

Level 3: Map:
There are four rams and one turtle. The turtle is the only real threat. He has a ranged attack so watch out. Kuwabara isn't going to be very useful so just take out the rams then have Kuwabara taunt the turtle. 

Level 4: Map:
There are four rams and one turtle again. This time I recommend trying it yourself. Experiment with the different commands and be sure to take out the turtle asap. If you want to use this guide for this level hit the turtle with the spirit gun then just defeat the rest of them. Taunt if you want. Don't give up. After this fight you will unlock the masked fighter. 

Level 5: Map:
There are four rams and three turtles. They aren't very hard. Now Yusuke should be strong enough to take most of them out. Don't be afraid to use Masked Fighter or Kuwabara in this fight. 

Level 6: Map:
There are four rams and three turtles. Simply attack the two enemies in front of you then go up slowly. Instead of going up you can also stay on the defensive side and stay in the back. Soon you will win. After this fight you will unlock Kurama. 

Level 7: Map:
There are four rams, three turtles, and one winged. Take out the ones in the front first. Don't rush up and attack the ones up top. Or you can have one or two players make their way up top and the other two can stay down and fight the others. Soon the battle will be over and you will unlock Hiei. After this battle there is also an item spinner. It spins and then you can try to get items. Right now there are only heal drop or spirit drop. Picture of the spinner:

Here is a video of the forest area and the in-game tutorial:
https://www.vizzed.com/playonlinegames/game.php?id=11216&page=user-videos&video=iWBWlNvMoYg#user-videos


Forest:
The Hotel was a test. The forest when the game starts getting a little hard. There are 10, but you only have to do 8 levels. Map:
 

Level 1: Map:
This level is pretty strait forward. There are four rams and two turtles. One thing you need to be aware of is getting you units surrounded. The can easily die if they get trapped. About 4 or 5 good hits and your character will die. This isn't a really big deal, but they will not get any exp from that round and they will have half HP and SE next round. To avoid loss of HP and SE just enter another easy map, like level 1, and have your person be active in the fight, and then win it. Then the character's HP and SE will be restored.

Level 2: Map: This round is... difficult. Map:
There are three rams, one winged, two turtles, and two floodgates. What are floodgates you say? They are portals that take monsters into the playing field. Monsters will keep coming out until they are destroyed. Watch out. My strategy is to defeat the first floodgate first, then the monsters, then the last floodgate, then any more monsters. So take your main attackers, I use yusuke, Kurama, and Hiei, and destroy the floodgate. Then take your other units, in my case would be Masked fighter and Kuwabara, and destroy the two turtles to the right. After you destroy the first floodgate have Yusuke or your primary fighter go up and defeat the Winged and the two Rams. Have the other two that were near the floodgate attack the rest of the monsters in the beginning. Then have the two you sent to destroy the turtles go up and attack the other floodgate and the monsters around the floodgate. After your sections have been cleared have the units attack the floodgate. They should be destroyed soon. 

Level 3: Map:
Another straightforward map. Just keep your distances. You can also break your team up into groups. One group can go up and one can go left. You should always make your team useful. Don't have your weakest members together. I like to put Yusuke and Kurama going up and Hiei, Masked Fighter, and Kuwabara go left. It's really simple.  

Level 4: Map:
This one the more challenging levels. There are three rams, seven turtles, and two wingeds. Take your time and don't rush into battle. Sometimes it's best to let the enemy come to you. Remember Four or Five good hits from your enemy can destroy any one of your units unless they are over leveled. Another strategy is to stay on one side. You can have all of your units go to the right for example and travel that way. The enemies will only have one way to go so they can't back attack you. Also you can go to the left and take the high ground. This will help the long ranged fighters. You can also have long ranged fighters go left to the high ground and short range fighters take the right route. Find what works for you and stick to it. Don't get left then right. That strategy might work, but it might get you stuck. Also having one person go ahead and taunt can protect some other units. If one of you units dies it isn't a big deal unless you are about to lose the match. Don't worry too much though. 

Level 5: Map:

This map is pretty fun. There are two rams, four turtles, and two winged's. It's like a little battle. Team VS teams instead of trying to kill everything. My strategy is to go all in and attack attack. There aren't any places to run and the map is really small.  It doesn't really matter how you go about things. Anything will work besides sitting around and doing  nothing.

Level 6: Map:

This level is tricky. There are six turtles, two rams, and two wingeds. One of your team members needs to get to the red spot before time runs out. Don't worry about defeating a whole lot of enemies. It doesn't matter how many enemies are left. If the time runs out you lose. Be careful and play it smart. The timer has 175 initiative on it. Try not to use attacks with high initiative. You will dig yourself into a hole you can't get out of. Just simply run up as fast as you can.  

Level 7: Map:
This map it intimidating. It isn't that hard. There are 2 rams, 5 turtles, 3 wingeds. Take the ones close to you out and let them come to you. Just taunt with someone then they will come right at you. Make sure you are using your stronger moves. This will take some of them out quicker. On this map try to worry less about initiative. Oh yeah save your Overdrives here. If all or most of your characters don't have their overdrive meter filled you can go back to Hotel level 1 and get them all overdrived. You will need them for the next battle. It's tough. One more thing you can use the terrain to your advantage. If you stay on the high ground it will be hard for your enemies to move up close to you. But don't worry. This one isn't hard at all.

Level 8: Map:
This is the first tournament match. Your goal in the game is to beat the tournament. The enemies are really tough. That's why you need overdrives. Someone most likely will die this match. There are two lions, two wingeds, Zeru, and Chu. Use your overdrives on chu and Zeru. Take them out asap, but if necessary defeat the lions or the wingeds first. Always be careful and watch what you are doing. In the end you will be rewarded with a spirit drop and two spins on the spinner. This will also unlock the level with the lock on it.

Level 9: Map:
In this level Rinku and Roto kidnapped Yukina. You have to get her back. You win by defeating all of the enemies. They are Rinku, Roto, three lions, and three rams. Take out the enemies around you first then go after Rinku and Roto. This is a pretty simple battle. In the end you will unlock Yukina and you will be rewarded with a heal boost and two spins on the spinner. You should always use Yukina in battle. I would remove Kuwabara so my team would be Yusuke, Kurama, Masked Fighter, Hiei, and Yukina.

Level 10: Map:

This map is easy, but intimidating. There are six rams, and five turtles. Take it slow. Since they are so close to you should stay where you are. Only move a little. Overdrives make this go a lot faster, but they aren't necessary. Remember to heal and run if you have to. Also taunt and charge. If you think it is necessary then defend as well. It's very satisfying if you finish a big round like this.

Videos:
https://www.vizzed.com/playonlinegames/game.php?id=11216&page=user-videos&video=7eJiHMmX6FM#user-videos
https://www.vizzed.com/playonlinegames/game.php?id=11216&page=user-videos&video=8R6Acyk1kOk#user-videos
https://www.vizzed.com/playonlinegames/game.php?id=11216&page=user-videos&video=HwlpaId5FCI#user-videos


Attack guide:
In this game the characters learn more attacks by upgrading their stats. You get upgrade points whenever the character levels up.
S E or spirit energy are the points you use to attack. I or initiative is the amount of time you have to wait so you can attack again. The S E changes so I just took an amount. Stronger moves need more initiative. The less initiative the better.

Yusuke is the main character. His main move is the spirit gun. He has long and close range attacks, but his initiative.
1)Spirit kick
Yusuke comes with this ability. You kick the enemy and use some S E. You can attack from one square away. S E = 15 I = 20
2)Spirit gun
You need to upgrade your S E once to get this. This is Yusuke's signature move and his main long range attack. I'm not exactly sure what the range is. It seems too change often, but it is long range. S E = 30 I = 15
3)Spirit combo
You need to upgrade your Power 4 times to get this. This combo moves punches twice and kicks once. You can attack from one square away. S E = 52 I = 25
4)Spirit shotgun
You need to upgrade your spirit energy 5 times to get this. This attack will hit enemies in from of you. It is in the shape of a rectangle right in front of you. S E = 139 I = 30
5)Spirit wave
You need to upgrade your offence 6 times to get this. The range is two squares ahead of you. S E = 170 I = 35
6)Spirit Mega gun
You need to max out your spirit energy to get this. It is a very powerful spirit gun and Yusuke's last move. S E = 170 I = 35 


Kuwabara is Yusuke's side kick basically. I don't use him much, because he uses too much S E and his initiative is about as high as Yusuke's. He can use long and short range attacks.
1)Spirit sword
Kuwadara comes with this move. He makes a sword with S E and hits the enemy with it. You can hit from one square away. S E = 13 I = 10
2)Long sword strike
You need to upgrade your offence twice for this. Kuwabara makes a sword with S E and hits the enemy with it. He can hit from 3 squares away. S E = 62 I = 30
3)Double sword
You need to upgrade your movement 3 times to get this. He makes two swords out of S E and hits the enemy with it. You can hit from one square away. S E = 53 I = 20
4)Energy blade storm
You need to upgrade your S E 5 times to get this. You shoot energy blades in from of you in the shape of a rectangle. S E = 107 I = 30
5)Spirit swatter
You need to upgrade your power 6 times for this. You can hit form one square away. S E = 135 I = 35
6)Super sword
You need to max out your S E for this. You can hit three squares in front of you. S E = 175 I = 50 


Masked fighter is a member of your team who uses mostly short range attacks.
1)Spirit kick
Masked Fighter comes with this. You can attack from one square away. S E = 12 I = 12
2)Rapid punch
Masked Fighter comes with this. You can attack from one square away. S E = 0 I - 12
3)Spirit gun double
You need to upgrade your spirit energy 3 times for this. This is a long range move. S E = 37 I = 20
4)Air shotgun
You need to upgrade your spirit energy 5 times for this. This is shaped like a rectangle in front of you. S E = 117 I = 30
5)Spirit of reflection blast
You need to upgrade your power 6 times for this. It is in the shape of a rectangle, but the top right and top left corner aren't there. S E = 188 I = 35
6)Giant blast gun
You need to max out your spirit energy for this. This is a long range attack. S E = 234 I = 50  


Kurama is another one of your loyal companions. He uses long and short range attacks.
1)Snap kick:
Kurama comes with this move. You can hit from one square away. S E = 0 I = 10
2)Rose whip
Kurama comes with this. This is his signature move and you can hit in one space in a circle around you. S E = 0 I = 15
3)Death seed
You need to upgrade your S E 3 times for this. You can shoot a seed somewhere around you. It is long range. S E = 45 I = 20
4)Whipslash fury
You need to upgrade your power 5 times. You hit three squares in from of you. S E = 0 I = 20
5)Thorn wheel
You need to upgrade your offense 4 times for this. You hit a rose whip around you. S E = 95 I = 25
6)Yoko death plant
You need to max out your S E  for this. It is in the shape of a large square in front of you. S E = 175 I = 50 


Hiei is one of your 5 main characters him and the four above) He has a lot of short range attacks, but only one long range attack.
1)18 Slash Jagan
Hiei comes with this move. He hits the enemy 18 times one square ahead of you. S E = 0 I = 10
2)Darkness sword
You need to upgrade your S E twice to get this. You can hit one square ahead of you. S E = 43 I = 20
3)Mortal flame
You need to upgrade your offense 3 times for this. This is his only long range attack and you can hit enemies next to you. S E = 52 I = 20
4)Dragon of the darkness flame
You need to upgrade your S E 4 times for this. You can hit 4 squares ahead of you. S E = 95 I = 25.
5)Sword splitter
You need to upgrade your power 5 times for this. You can hit one square ahead of you. S E = 0 I =30
6)Dragon summon
You need to max out your S E for this. You can hit in the shape of a large square ahead of you. S E = 202 I = 50


Yukina is Hiei's sister. She is a healer, but her offensive attacks are weak.
1)Frozen wind
Yukina comes with this. You can hit the enemy one square ahead of you. S E = 18 I = 10
2)Focused healing
You need to upgrade your S E twice for this. You can heal one team member with this. S E = 9 I = 10
3)Healing ring
You need to upgrade your S E twice for this. You can heal everyone in a circle around you. You heal everyone including enemies and Yukina. S E = 41 I = 3.
4)Frozen tears
You need to upgrade your offense 6 times for this. You can attack in the shape of a rectangle in front of you. S E = 60 I = 40
5)Rallying strength
You need to upgrade your power 5 times for this. S E = 60 I = 35
6)Hero healing
You need to max out your S E for this. This attack will heal all of your allies and Yukina. S E = 85 I = 40 


Chu has lots of short range attacks and a few long range.
1) Stumbling fist
Chu comes with this attack. Chu just punches the enemy. You can hit one square ahead of you. S E = 0 I = 12
2) Rapid jabs
Chu comes with this attack. He punches the enemy. You can hit one square ahead of you. S E = 0 I = 20
3) Spirit ball shot
You need to upgrade your spirit energy twice for this. This is a long range attack. S E = 37 I = 25
4) Crusher kick
You need to upgrade your offense 5 times for this.  You can hit one square ahead of you. S E = 77 I =15
5) Concussion headbutt
You need to upgrade your power 6 times for this. You can hit one square ahead of you. S E = 0 I = 25
6) Power ball shot
You need to max out your S E for this. You can hit 5 squares ahead of you. S E = 75 I = 40


Rinku’s weapon is a yoyo. His attacks are all close range and one short range.
1)Quick kick
Rinku comes with this. He kicks someone one square around him. S E = 0 I = 15
2)Yo- shot
Rinku comes with this attack. This is his only long range move. S E = 28 I = 15
3)Poison Strike
You need to upgrade your movement 3 times to get this. You can hit one square away. S E = 28 I = 15
4)Serpent energy snare-4 power
You need to upgrade your power 4 times to get this. This attack is in the shape of a rectangle. S E = 54 I = 20
5)yo- shock bite
You need to upgrade your offense 5 times to get this. You can attack one space ahead of you. S E = 79 I = 25
6)Serpent calling
You need to max out your S E for this. It is in a circle around Rinku. S E = 204 I = 40 


Jin is a good member. He uses short range attacks and one long range move. I use him in my party.
1)Rapid punch
Jin comes with this. You punch your enemy. You can hit from one square away. S E = 0 I = 10
2)Tornado fist
Jin comes with this move. He makes a tornado and punches someone. You can hit from one square away. S E = 67 I = 20
3)Tornado raid
Jin starts with this. This is his only long range move. He throws a tornado at the enemy. S E = 80 I = 20
4)Double tornado crush
You need to upgrade your offense 6 times to unlock this. You can attack from one square away. S E = 134 I = 35
5)Wicked tornado
You need to max out your S E to unlock this. You can attack in a rectangle around you. S E = 202 I = 50
6)Fly by kick-4 movement
You need to upgrade your movement 4 times to get this. You can attack 32 squares ahead of you. S E = 0 I = 25 


Touya attacks are all short range. I don’t use him any. I think the others are more useful.
1)Frozen fist combo
Touya comes with this move. You can hit one square ahead of you. S E = 17 I = 10
2)Cold spires
Touya comes with this move. It is like the rectangle, but the top right and top left squares aren’t there. S E = 34 I = 15
3)Ice driver
Touya comes with this move. You can hit one square ahead of you. S E = 34 I = 15
4)Ice sword swing
You need to upgrade your S E 5 times to get this. You can hit one square ahead of you. S E = 81 I = 35
5) Shards of Ice Blast
You need to upgrade your movement 5 times to get this. You can hit in a rectangle ahead of you. S E = 136 I = 35
6) Icicle falls
You need to max out your S E to get this. You can hit one square ahead of you. S E = 188 I = 50