Ok, the bugs I see for this are:
Colt python: when you reload, the bullets dont drop from the chamber
Uzi: look to the right, its fine, look to the left, its invisible, can't reload facing left
Ballistic Knife: looks like it in the campaign, but it doesn't shoot and forms a nightstick in hand
Weapon center [control]: doesnt summon most weapons
backgrounds on campaign needs to match
insert-page down doesnt summon weapons, as well as 0, . , from numpad
some stuff, like the flash bang, healt, and 1-ups, disappear when it makes contact with the ground
f4 doesn't summon weapon
Otherwise all that, its an amazing game! 5 stars!