Chainsaw - 100 hits, 5 damage, uses 1 image and 6 sounds (yeah, I did the soundsystem of start loop, end loop e.t.c)
Also makes smoke effect. (screenshot 2);

Pistol - 12 bullets, 14 damage. Doesn't use projectiles;

Shotgun - 8 shells, well, a lot of damage. Also doesn't use projectiles;

Super-Shotgun - 3*2 shells, MOAR damage. Also doesn't use projectiles;

MG-88 Enforcer Machine Gun - 60 bullets, 9 damage. Also doesn't use projectiles;

Mach-2 Chaingun - 60 bullets, 20 dmg. Doesn't use projectiles(screenshot 3);

Grenade - Grenade is grenade. What else do you need?

Series 3 Plasma Gun - 30 ammo, 16 dmg.

Rocket Launcher - 5 rockets, much damage (well, not much, but ~70 each) (screenshot 4)

BFG 9000 - Big Fragging Gun, the ultimate weapon of this pack, 4 shots, each=~125. You can charge shots, with holding the Space button. So, it will use several ammo in one time, and will raise dmg. So:
dmg:125*charge. Arc damage: 3*charge.
(Screenshot 5)