Really nice and simple game! I feel some sort of indication of either where enemies can move, or if enemies can kill you on the next turn would be great. In later waves, the amount of enemies would be a little too much to keep track of where each one moves.
I tried the upgrade where enemies avoid the firelight and killed an enemy that was half covered by the firelight, but was killed right after that, not sure if the entire tile needs to be covered by firelight for the upgrade to work.
The font also seems a little too big for the upgrades, making the words hard to read as they’re split to a different line many times.
You get to see a Censor v0.6.0 on game over if you have the game in full screen, not sure if this was intended.