impulse 1: Melee
impulse 2: Bird gun/ Single Barrel Shotgun (Same weapon, Bird gun is merely a nickname)
impulse 3: Super Shotgun
impulse 4: Nailgun
impulse 5: Super Nailgun
impulse 6: Grenade Launcher
impulse 7: Rocket Launcher, Assault Cannon, Pipe Launcher.
impulse 10: Changes to the previous weapon in your loadout.
impulse 12: Changes to the next weapon in your loadout
impulse 69: Switches between your current weapon and the last weapon you held.
reload: Reloads any Weapon with a Limited Magazine size.
dropitems: Drops flag/ carried item if the map allows it.
special: Uses the special skill of the class you are currently playing.