Complete Stage 2 to achieve

Complete Stage 1 to achieve

Complete Stage 3 to achieve

Hit 10 UFOs to achieve

Complete Stage 4 to achieve

Hit 100 Helicopters to achieve

Destroy 50 Tanks to achieve

Kill 300 People to achieve

Hit 30 Cargo Planes to achieve

Kill 150 Animals to achieve

Hit 100 Jet Pack Riders to achieve

Advance 4000 miles to achieve