Very nice and polished game, love the artsyle and sounds 👍.
But I think :
1. Game needs some sort of tutorial in the beginning.
2. Story/lore for game.
3. Tooltips so that when a beginner hovers over elements they get a detailed description of what that thing is, what is it's use, what would be the problem if this number gets low, etc.
4. Multiple exits maybe? Player needs to choose an exit which'll have different consequences or may lead player to different types of levels.
5. More variety in enemies.
It's been a while since I enjoyed a game. It's casual but quite interesting.