What worked:
The art on the lamps showing how much energy they have is a nice touch. I like the concept of using your resources and having to keep moving around the map as a result. It's a neat arcade game as is.
What didn't:
The screenshake and brief stun on enemy spawn is too much for notifying the player. I kept thinking I was taking damage.
I never actually felt like I was in danger.
The enemies feel like they have too much hp. I might have preferred the lights drain faster if it meant enemies also died faster.
Bugs:
Didn't see any.
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Great job!