I think more of a "city" would be helpful and maybe jobs you can do, like kill 10 creatures, then if you succeed, you get more money the next time you take that job (or a similar one) again. More of a story and bosses would be great to. Homes that the doors are closed may show more signs of life too.
1 problem and 1 recommendation: When you fail a level, you can still continue to the next. You should also be able to use WASD keys, because it works better with the mouse for flying
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The game is in development, you should have been more careful. Also, don't call it the infinity void.