Kill 20 enemies by shooting from the hip (without aiming with the L1 button)

Kill 20 enemies with Mk-NDI grenades

Kill 30 enemies with the MP40

Find 50 treasures

Find 40 treasures

Find 35 treasures

Find 25 treasures

Find 20 treasures

Kill five enemies in a row with headshots

Build 10 towers in less than 30 seconds upon entering a stage

Collect 45 enemy intel items.

Complete the Single Player campaign on any difficulty.