Welcome to the 2D Battle Game (unnamed as of yet)! It will be gore free, and appropriate. The fundamentals are:

9 classes. Scout (fast and quick), Soldier (rocket launcher), Pyro (flamethrower), Demoman (grenades and stickybombs), Heavy (minigun), Engineer (buildings and sentries), Medic (medigun), Sniper (sniper rifle) and Spy (cloak and dagger).

Online and offline. There will be options.

3 weapons for most classes. The exceptions being Engineer and Spy.

I know this sound really unsuitable for Scratch, but I will do my best to keep things as kid friendly as possible.