A cool game about the devil's protégée versus the angle Tenshi.
Story:
Ackman is the devil's protégée and has to fight Tenshi, a little angle from heaven who wants to beat Ackman. Ackman and his little friend Godon are going on the way to defeat Tenshi and overcome his traps and angle army. The story is cool, with funny phrases ("what's a great angle?") and characters.
Gameplay:
Go Go Ackman is a simple jump'n'run. You play Ackman and walk from left to right, beat up the enemies with punches or weapons (boomerang or gun) and at the end of the levels you fight a boss. The gameplay itself is simple but the difficulty is very very hard. The special thing is that at some points in the game you can choose what you want to do and that affects the levels you're playing. You can choose to continue on water or in the caves. There are even some special levels where you drive a car or swim on a boat.
Graphic/Stages:
The graphic is very good and I would say it's one of the best. The stages look cool and there are some nice ones, like the desert (posted screenshot). Unfortunately there are not that many. And as a anime or manga fan you recognize it immediately: the character design is from Akira Toriyama (Dragonball).
Sound:
The sound is also very good and matches very well with the funny moments.
Conclusion:
Go Go Ackman is a great jump'n'run with the great design of Akira Toriyama, some cool stages, a very good graphic and hilarious characters and a cool funny story. When you can overcome the hard difficulty then you find a great game you won't regret playing.