Does the game control with normal numbers and not numpad (I don't have numpad on my keyboard) and I can't seem to press 1 at the beginning of the game.

That moment when you pushed "3" instead of "2". Started over and made it to the end. Blocks are sometimes difficult to line up with the other paths, but the idea is interesting. 

I found some incoherence with the controls - I had to press numpad 1 to start, and numpad 2 and 3 restart and quit the game, but to actually move the blocks I had to use arrow keys. You should've implemented 8/2 and 4/6 numpad movement. It was also a bit annoying that I cannot move the blocks to push the zombie back; this might've been intentional, to makethe puzzles harder, but it honestly just feels lazy.