Is Orange not spawning an intended feature? Orange-related upgrades feels pretty useless. Also I recommend highlighting selected tile differently to hovered tile - sometimes my clicks are not registered properly and the UI failed to convey that.
I think a turn-based mode should be implemented in addition to the real-time mode. It helps new player to study enemies and understand game mechanics. For example, I died because I 'angered the gods', but I did not even know what happened.