The idea is really cool. It would work even better as a coop or a multiplayer. The aesthetic is fun and distinct.
Things to improve on:
- UI of the shop is incredibly difficult to read
- Camera is unpleasant to control at the moment, the POV just doesn't provide enough information. Try going into a higher, forced camera, either top down or something closer to it. The game is about lines and connecting points along these lines, top down would provide much more info to the player.
- The round time is short, and doesn't allow for enough fun to happen between shops.
- The progression could be faster, I've had many shops where I couldn't buy anything.
Overall this could be a really fun experience, the idea and vibe is already there. You need some solid design improvements and it will be a quality game.