Spoiler!! Left - Up - Up - Left - Up - Up - Right - Up - Right - Right - Down - Right - Down - Right - Down - Left and you should be able to complete it from here. Spoiler!!

I think you should make a little change to the spawns. Right now zombies spawn on top of me which makes the game almost impossible. I'm just suggesting, and nice game btw.

I don't get it. No matter how many times I reset I'm not experiencing "But what is happening now is after reseting and clicking on a size, it shows the completed puzzle for a few seconds, then goes back to the menu :?"