Gdy ukończysz odpowiednie zadanie, będziesz miał dostępne sloty dla wskazanych perków:

(nie tłumaczyłem tych cheatów, gdyż nie ma ku temu powodów - wyraźnie widać, co należy zrobić, by odblokować określone umiejętności. Jeśli jednak komuś jest to nie na rękę, proszę dać znać na PW lub w komentach poniżej, a spolszczenie się pojawi).

Unlock Satchel Charge x2:
Reach Level 4 (2 remote detonation explosives).

Unlock Special Grenade x3:
Reach Level 4 (3 special grenades, no smoke).

Unlock M9A1 Bazooka x2:
Reach Level 4 (bazooka with 2 rockets).

Unlock Bomb Squad:
Reach Level 16.

Unlock Bouncing Betty x2:
Reach Level 24.

Unlock Bandolier:
Reach Level 40.

Unlock Primary Grenade x2:
Reach Level 44.

Unlock M2 Flamethrower:
Reach Level 65.

Perk Slot 2

Unlock Juggernaut:
Reach Level 4 (increased health).

Unlock Stopping Power:
Reach Level 4 (increased bullet damage).

Unlock Flak Jacket:
Reach Level 4 (reduce explosive damage).

Unlock Gas Mask:
Reach Level 4 (protect against Tabun Gas).

Unlock Fireworks:
Reach Level 4 (higher explosive weapon damage).

Unlock Camouflage:
Reach Level 12.

Unlock Sleight Of Hand:
Reach Level 28.

Unlock Shades:
Reach Level 32.

Unlock Double Tap:
Reach Level 36.

Unlock Overkill:
Reach Level 56.

Perk Slot 3

Unlock Deep Impact:
Reach Level 4 (deeper bullet penetration).

Unlock Extreme Conditioning:
Reach Level 4 (sprint for longer distances).

Unlock Steady Aim:
Reach Level 4 (increased hip fire accuracy).

Unlock Toss back:
Reach Level 6 (reset fuse of picked up grenades).

Unlock Second Chance:
Reach Level 9 (revive downed allies).

Unlock Martyrdom:
Reach Level 20.

Unlock Fireproof:
Reach Level 48.

Unlock Dead Silence:
Reach Level 52.

Unlock Iron Lungs:
Reach Level 60.

Unlock Reconnaissance:
Reach Level 64.

Vehicle Perks

Unlock Greased Bearings:
Reach Level 4 (increased turret rotation speed).

Unlock Water Cooler:
Reach Level 4 (decreased turret overheat).

Unlock Ordnance Training:
Reach Level 12.

Unlock Lead Foot:
Reach Level 28.

Unlock Coaxial Machine Gun:
Reach Level 40.

Poniżej wskaze bronie zostają odblokowane po przejściu poszczególnych etapów:

Rifles

Unlock SVT-40:
Reach Level 4.

Unlock Gewehr 43:
Reach Level 7.

Unlock M1 Garand:
Reach Level 17.

Unlock STG-44:
Reach Level 37.

Unlock M1A1 Carbine:
Reach Level 65.

Unlock Flash Hider:
Complete Marksman Challenge 1 (invisible on radar when firing, reduced muzzle flash, but shorter range).

Unlock Suppressor:
Complete Marksman Challenge 1 (invisible on radar when firing, reduced muzzle flash, but shorter range).

Unlock Aperture Sight:
Complete Marksman Challenge 2 (precision sight).

Unlock Telescopic Sight:
Complete Marksman Challenge 3 (enhanced telescopic sight).

Unlock Rifle Grenade:
Complete Marksman Challenge 4 (grenade launcher attachment, replaces Perk 1 slot).

Bolt Action Rifles

Unlock Springfield:
Reach Level 4.

Unlock Arisaka::
Reach Level 4.

Unlock Mosin-Nagant:
Reach Level 21.

Unlock Kar98k:
Reach Level 41.

Unlock PTRS-41:
Reach Level 57.

Unlock Sniper Scope:
Complete Marksman Challenge 1 (accuracy and range increases).

Unlock Bayonet:
Complete Marksman Challenge 1 (melee attack range increases).

Unlock Bayonet:
Complete Marksman Challenge 2 (melee attack range increases).

Unlock Rifle Grenade:
Complete Marksman Challenge 2 (grenade launcher attachment, replaces Perk 1 slot).

Unlock Rifle Grenade:
Complete Marksman Challenge 3 (grenade launcher attachment, replaces Perk 1 slot).

Machine Guns

Unlock Type 99:
Reach Level 4.

Unlock BAR:
Reach Level 4.

Unlock DP-28:
Reach Level 13.

Unlock MG 42:
Reach Level 33.

Unlock FG 42:
Reach Level 45.

Unlock Browning M1919:
Reach Level 61.

Unlock Bipod:
Complete Marksman Challenge 1 (reduces motion for more accuracy).

Sub Machine Guns

Unlock Thompson:
Reach Level 4.

Unlock MP40:
Reach Level 10

Unlock Type 100:
Reach Level 25.

Unlock Ppsh:
Reach Level 41.

Unlock Suppressor:
Complete Marksman Challenge 1 (invisible on radar when firing, reduced muzzle flash, but shorter range).

Unlock Aperture Sight:
Complete Marksman Challenge 2 (precision sight).

Unlock Round Drum:
Complete Marksman Challenge 3 (increased ammunition capacity).

Unlock Dual Magazine:
Complete Marksman Challenge 3 (increased ammunition capacity).

Shotguns

Unlock M1897 Trench Gun:
Reach Level 4.

Unlock Double Barreled Shotgun:
Reach Level 29.

Unlock Grip:
Complete Marksman Challenge 1 (vertical foregrip to reduce recoil, replaces Perk slot 1).

Pistols

Unlock Colt M1911:
Reach Level 4.

Unlock Nambu:
Reach Level 4.

Unlock Walther P38:
Reach Level 4.

Unlock Tokrev TT-33:
Reach Level 21.

Unlock .357 Magnum:
Reach Level 49.

Primary Grenades

Unlock Frag:
Reach Level 4.

Unlock N 74 ST:
Reach Level 4.

Unlock Molotov Cocktail:
Reach Level 10.

Special Grenades

Unlock Smoke Grenade:
Reach Level 4.

Unlock Tabun Gas Grenade:
Reach Level 4.

Unlock Signal Flare Grenade:
Reach Level 4.

Extra custom Weapon Slots
When you reach the indicated Prestige rank the corresponding extra custom weapon slot will become available.

Unlock Slot 6:
Reach 1st Prestige.

Unlock Slot 7:
Reach 2nd Prestige.

Unlock Slot 8:
Reach 4th Prestige.

Unlock Slot 9:
Reach 7th Prestige.

Unlock Slot 10:
Reach 10th Prestige.

Complete the indicated task to unlock the corresponding feature.

Unlock Veteran Mode:

Veteran mode becomes unlocked when you reach Level 32. This feature is a Co-Op mode with enemies that are harder to defeat.

Unlock Zombie Mode:

Complete Campaign mode to unlock this feature which is a 4-Player Co-Op mode that has endless waves of Nazi zombies attacking you.