The concept and idea is great. I love the background music for both phases.
But for Phase 1: Id love to see a parallax background or just a bacground that moves when the player does, it was kinda confusing if there was nothing on screen.
For phase 2: I think you wanted to add more but couldnt do that in time, cuz it feels too simple.
But srsly the idea is great, hope you work on this after the jam :D