I survived for 7 cycles. It took me a while to understand how lasers work and I was pretty disappointed that they didn't turn rocks into crops.
I like the raycasting and the art (although the pixel scales don't match). Apart from my own game, I think yours is the only other one that depends on raycasting which I've seen so far.
The building controls felt a bit clunky. I'm not sure why, though. For the walls, at least, it's clear that they should be with a size of 3x1 instead of 2x1 in order to always be centered at the player's position.