This is defenitely interesting game! Though, a few gamedesign errors
1. In Platforming game you can move with A and D, but not jump with W, nor with Space (best choice), only with arrows. While other games use WASD control scheme
2. Shooter game, too many silmes, they have too many health. It becomes tiresome really quick. 10-15 enemies that take 2-3 shots to kill would be much better. Maybe give player a shotgun that oneshots slimes, but slow to reload to make player aim their shots better
3. Most of the times i can move without fighting and collecting all of the treasure chests
Besides that, i really loved idea of mini game collection like that! It just would need more polish. Keep up good work!