Found the nuke

Finish the game in Easy Mode

Defeat 30 enemies with the Arm Micro

Get 50 headshot kills in Campaign Mode

Kill 50 enemies with the Bullseye or Marksman while moving, without using zoom

Kill 20 enemies with environmental objects

Kill 2+ enemies with one Rossmore blast

Kill 5 Longlegs in mid-jump

Defeat 20 enemies by blind-firing while in cover (without aiming with L1/R1)

Protected Chaffin from the soldiers in the street in Operation Swordbreaker

Defeat 30 enemies with the M9

Defeat 100 enemies with headshots