Good Game
It was an overall good game, except for that the gameplay was a little slow ( but then again thats probly just my shitty comp)
I hope you plan to update this game in the future, cause you could make it a lot cooler, here are some suggestions...
1. Different types of enimies.
2. Way to regen, or even buy back health
3. Longer story after a certain level
4. Maybe purchase-able upgrade for your Moon Miner
Anyways, those are just some suggestions, but as for now you got a good game, i enjoyed it