
Bayonet for Type 99 - 75 kills (Type 99). Bayonet for Springfield - 25 kills (Springfield). Bayonet for Mosin-Nagant - 75 kills (Mosin-Nagant). Bayonet for M1A1 Carbine - 100 kills (M1A1 Carbine). Bayonet for M1897 Trench Gun - 75 kills (M1897 Trench Gun). Bayonet for M1 Garand - 75 kills (M1 Garand). Bayonet for Arisaka - 75 kills (Arisaka). Aperture Sight for Type 100 - 25 kills (Type 100). Aperture Sight for Thompson - 75 kills (Thompson). Aperture Sight for SVT-40 - 75 kills (SVT-40). Aperture Sight for STG-44 - 75 kills (STG-44). Aperture Sight for PPSh-41 - 25 kills (PPSh-41). Aperture Sight for MP40 - 75 kills (MP40). Aperture Sight for M1A1 Carbine - 75 kills (M1A1 Carbine). Aperture Sight for Gewehr 43 - 75 kills (Gewehr 43). Get a certain number of kills with the weapons listed below for the desired upgrade(s):
If you are invited to play a co-op Zombie Mode game it will be unlocked on your profile afterwords. There is a box here and if you have 950 points or more you can buy a random gun - the Ray Gun or the FG42, for example.
In Zombie Mode, when you have 1000 points or more, go to the door that says HELP and on the far left.