Have the Rocketeer kill 500 zombies.
Use Air Strike 20 times.
Have the Sniper shoot 750 bullets.
Kill 1500 zombies in total.
Have the Gunner kill 500 zombies.
Have the Rocketeer shoot 500 rockets.
Rescue 15 refugees in total.
Have the Sniper kill 500 zombies.
Have 500 critical shots in total.
Have the Gunner stun 200 zombies.
Kill 100 giant zombies.
Kill 100 flying zombies.
Have the Sniper shoot through 100 zombies.
Have the Rocketeer shoot 50 extra rockets.
Have the Gunner shoot 1000 bullets.
Fully upgrade all characters.
Acquire all gems.
Have 10000 gold.
Unlock the Rocketeer.
Unlock the Sniper.
Use Bomb of Duty 50 times.
Use Time Machine 35 times.
Defeat Zombogod.
Defeat Zombogod with perfect life.
2052230
32627
