Pea Shooter Trophy in Call of Duty Classic
Complete a mission using only a pistol and no melee attacks.
How to unlock Pea Shooter
This is the same as Survivor, except you can die. Start a new game on regular and switch to your pistol in the 1st mission (the one after training). You cannot use melee, I don't know about grenades, but if you use melee or another weapon, even if you shoot at the ground with another weapon, you cannot get this trophy.