i love isometric games and the artstyle somewhat reminded me of "Kernel Panic".
Aiming was hard like others said, i gues the game is best played with a controller. I wish i could shot more often because shooting is fun, backtracking just to reload not. Automatically re spawning shapes every x seconds up to a limit like 5 with "refueling" stations were you could go above the limit. or maybe randomly re spawning shapes like you had when the waves startet could be one solution. What do you think?
The game has potential and you completed a lot of assests, content and features. This game feels like a complete game, not "just" like a jam game. If you update it after the Jam, i will give it another try :)