This is a great entry, polished and quite well balanced. The only thing i could ask for is a way to move faster [le'ts say a longer "slinger" line which i can adapt better when needed].
Nice work!
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I think that would affect the balance of the game quite a lot as well, because the whole purpose is that your movement is a bit restricted, making you plan your moves a little bit up ahead.
What I could imagine though is having powerups that make you temporarily move faster / longer within an iteration, similar to the difference between some enemies and bullets.