Assault Cannon:
It takes 4 cells to power up the assault cannon, and when it begins to fire it eats up shotgun ammo at a frightening rate. Due to the weight and kick of the weapon, the heavy weapons guy must have both feet on the ground to fire it, and cannot move while its spinning. Also, the longer the weapon is fired, the more unstable the heavy weapon guy's aim becomes.
Other Notes:
Due to his size and armor, the heavy weapons guy is not fazed much by
injury. He gets knocked around less.
There's a discription of a hwguy...good but not accurate (note this info comes strait out of the readme.txt provided with TF). First lets fix a few things:
1. Mainly effective in hall ways or small areas where other classes can not menuver very well, he can be killed by weaker classes if they've got plenty of cover, due to the time taken for the assault cannon to spin up and down.
2. It takes 6 cells to power up the assault cannon, and when it begins to fire it eats up shotgun ammo at a moderate rate.
3. Also, the longer the weapon is fired, the more unstable the heavy weapon guy's aim becomes. (no really true for the heavy any more, 2.15 this happened and it was uncontrolable after extended periods of time, but in 2.8 and up it is pretty much non-exsistant)
4. Due to his size and armor, the heavy weapons guy is not fazed much by injury. He gets knocked around less. (NOPE WRONG AGAIN! He still gets knocked around a bit from the higher calaber rounds (ie. rockets and grenades, also these pushes can be useful but we will get to that in a later section)