Sonny 2, wow. What can I say? Even with hacks, this game is still pretty hard to beat.

Sonny 2s gameplay is amazing. You get to choose what skills to attack your enemy with or a positive action towards your ally that you have available at your disposal but with a twist. You can't take your free time. You have about 10 - 15 seconds of choosing your Allys A.I. behaviour, choosing whether or not you should buff yourself or your friend, choosing how to attack your enemy whether if its changes the tide of battle or gives you room to breath. Not to mention you have alot of debuffs and buffs on both sides of the playing field and you have to also choose how to deal with them or how to take advantage.

Each class in the game is very unique, Biological is your beginner class. They are a Strength and Speed class all while balancing it out with killer poisounous skills to wittle your opponents health.
Phycological is your madman class. You screw and jumble your enemies mind to hinder their combat effectiveness or you can cruelly sacrifice your teamates to give yourself a boost in damage.
Hydraulic is your Balanced Class. This class emphasizes on either healing and buffing your self and your allies or slowing, freezing, and chilling your opponents to the very core.

Now not only does each lass play differently, they also have a wide variety of Skills, ranging from Offensive, Defensive, and Supportive. More or less depending on the class you chose. There are also Passive Skills that boost you or trades one thing for another.

Storywise, all I can say is, it is pretty interesting....

All in All, this game is one of the best Flash Games I have ever played. It is definitely in my Top 10 Games list.