Original COD Achievements

[Midnight]

Call of Duty Classic Achievements are pretty achievable

First Termer 10
Complete Training.

Old Glory 20
Complete the American missions.

Union Jack 20
Complete the British missions.

Victory Banner 20
Complete the Russian missions.

Tank Breaker 15
Finish Hurtgen.

Rocket's Red Glare 15
Finish Rocket.

Flag over the Reichstag 15
Finish Berlin.

War Hero 30
Complete the game on the hardest difficulty.

Gunslinger 10
Get kills using a pistol, rifle, submachine gun, and grenade in a mission without dying.

Pea Shooter 20
Complete a mission using only a pistol and no melee attacks.

Survivor 15
Complete a mission without dying or loading a checkpoint.

Won The War 10
Complete the game.

[Dathomsta]

Looks interesting.