Beautiful game, and amazing job fitting it in the constraints. The ruined building generation code is really cool.
Took me quite a few tries. Spoilers (rot13 encoded): V guvax zl bevtvany fgengrtl bs tbvat npebff gur pragre vf yvgrenyyl vzcbffvoyr--gurer'f n tnc V pna'g frrz gb pebff. V jnf noyr gb frr gur obeqre tbvat qbja gur obggbz ohvyqvatf, ohg jnfa'g noyr gb jva hagvy V whfg fghpx gb gur hccre ohvyqvatf, gubhtu V ena vagb gur zbfg cngusvaqvat vffhrf gurer. Abg fher vs guvf vf zl gvzvat ba gur zbirzragf, be gur vagraqrq cngu.