Here are the game classes, based on your the game genre your avatar's character is in. Although this game is mostly freeform you will have several advantages and disadvantages based on your class, (the genre your in-game character is from in the in-universe video game) while playing this game.
First Person Shooter:
Fastest ever overall class at long-range and projectile combat and can take on hoards of enemies, but subject to ammo limits and can be easily defeated in melee combat.
Fighting Game:
Absolute best class for weaponless 1 v 1 melee combat but long range is almost non-existent and prone to getting ganged up on by multiple opponents.
Real Time Strategy:
Has a huge amount of support but all players familiars and support are fragile and they all have a need to protect a central character or building or they all are defeated in that battle and can no longer participate.
Role-Playing-Game:
They are over all the avatar's with the most obvious advantages. They have the highest power and most effective team-up powers, but they must used turn based tactics, (which in this game means they must always let all other players post before them before they can attack) and need to charge up before a huge attack with long animations in-universe.
Beat-em-up:
Although the best at melee fighting with multiple enemies they are vulnerable to bullets, aren't quite as tough when fighting single enemies or in duels and must go to another "screen" whenever one pops up.
Platformer:
Although you have the easiest traversal of any character and a few jumps are enough to take care of even the toughest opponent you are also very fragile without powerups. Even with powerups you can only take a few hits. You can move on any terrain except water, and you slip on ice in the virtual world.
Adventure Game:
Like the old point-and-click adventure games, you can solve puzzles much easier than other games. Plus, unlike other genres, you can make improvised equipment to solve puzzles and go into evil lairs much more than any other genre. But you are much slower to move than other genres and in direct combat you are much less useful than all of the other genres.
Vehicle Combat, (Mecha, Dogfighting, or vehicle combat games like Twisted Metal):
You have control of a much hardier piece of equipment than any other game character and can move in water, space or places even platformers can't go. But they are limited to what the capabilities are in their fictional game, can be destroyed by jumps from platformers and once the vehicles are damaged in ways that make them hard to move this genre can end up essentially helpless.
