It is possible to collect the same keybind multiple times by pressing R after collecting it. You can use this exploit to get all of the keybinds at once. After you have all the keybinds, the next time you try to collect one the game crashes.
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Thanks for letting me know, I'll get around to fixing that. The keybinds are just a counter, when you pick one up, it just increments it by one. Once it reaches the max, it crashes since it doesn't know what to do. Making the pickups be assigned a value and checking if you have met that value should fix the issue. Thank you so much for playing!