@nefenjo, some of the rooms will have a hole on north (top) side of room, after you clear it, it will completely open up. You go into it and there will be 4 chestss and a guy in the middle. The guy in the middle tells you how much the items cost.
Reindition of 9365fall's comment, Town Mayor "HOLY CRAP, There's and army of evil minions on the horizon, quickly now, we must cut a path arund the town 15 different times and attack from the town!!!" Villager "That sounds easier than meeting them in combat, or building a wall OMG A DOUBLE RAINBOW
Very fun game, kept me busy for nearly and hour getting all of the achievments. Graphics are 5/5 due to the fact that they are easy on the eyes. Difficulty is amazing because it is constantly fluxuating (did i spell that right) and is never to hard or too easy, except for wave 41 but that was more fun than any other. One other thing that i loved is the ammo changing, the plasma balls to plasma waves was just outright cool, the rockets kept getting bigger, and everything else. 5/5 in my book.