Finish Level 1
Finish Level 5
Finish Level 10
Finish Level 15
Finish Level 20
Finish Level 25
Complete every levels on Easy difficulty
Complete every levels on Normal difficulty
Complete every levels on Hard difficulty
Unlock all characters
Unlock all motorbikes
Unlock all weapons
Pick up a stronger weapon
Pick up a weaker weapon
Pick up a shield
Pick up 1000 money
Pick up 5000 money
Pick up 10000 money
Pick up 25000 money
Pick up 50000 money
Kill 10 enemies
Kill 50 enemies
Kill 100 enemies
Kill 250 enemies
Kill 500 enemies
Kill all enemy types once