I really like the fly ememy, its very fun to doge and makes the game interesting! When you are stationary its very easy to doge, but as soon as you move around it gets interesting!
The game does not give a lot of feedback to the player, so it took me a while to figure out you can mine from a distance for example! (Or that mining something took multiple clicks in general)
Its incredible to think that this was made in just 3 days, amazing work! i really enjoyed playing it!