thanks for playing. Realised while playtesting tgat you probably can beat the game just by repairing, but decided to leave it that way, since was worried someone might not figure out how defensive pillars work, as I didnt have time to implement any system to hint about how to use them (mainly the point that it had two different hotspots).
It does become mechanical then, and you do miss the main game loop basically then (which is about balancing between towers and building the beacon), but at least you can complete it.