Don't worry, when we start working on the Special Infected talents, we plan to scale them accordingly to balance the mod.
Marvel;
There is only one command you need to use...for the most part...I don't want to release too much info without discussing it with ChrisP first, but, each class has 2 actions that they get at higher levels...it basically activates some of their stronger abilities, so a max of 3 commands
!xpm
!actionkey1
!actionkey2
However, in the help menu and such, we show how to bind the action keys to buttons on your keyboard, so you don't have to type them in every time.