Kill all the zombies in each stage and beat the final boss
By planting plants and defeating the zombies. Best tactic is to hold zombies off with the walnuts.
easy, just kill the zombies
Beat the game
no!
Get 30
To beat the game you must complete adventure mode for at least once
Just beat adventurer mode!
You have to beat adventure mode. Then you will get survival mode
yes i have it and i beat the whole game
You receive an achievement and you unlock the first Nazi zombies level, nacht der urden.
You have to beat a certain about of levels in adventure mode and then you should unlock it