Major Mayhem achievements

Defeat 500 enemies with a silenced weapon

Completely dismantle the Giant Death Machine

Use the Silenced Pistol while wearing the Tuxedo

Collect 10,000 coins

Defeat 500 enemies with the P99

Score 20,000 points in Timebomb mode

Shoot 30 chickens in a single Arcade game

Defeat 100 enemies with barrel explosions

Have 10,000 coins in the bank

Defeat 500 enemies with the Sniper Rifle

Play Major Mayhem on 3 consecutive days

Purchase one of each of the 5 power ups