Cheat Codes...
	Extra Shop Item...
	Gatling Gun...
	Hard Mode...

Enter these at cheat codes in Settings.

Effect	Password
Master all levels in Easy	23830252
Master all levels in Hard	28077304
Master all levels in Medium	07401649
Set stars to 5000	67043273
Unlock Endless Siege	58900895
Unlock Hard Mode	22773762
Unlock Specials	93456765

Unlockable	How to Unlock
Peacemaker	Complete the campaign
Gatling Gun	Master all levels on Hard difficulty

Master all levels on Hard difficulty.

Master all levels on normal difficulty.