itch.io

 Every 5 seconds, the arrow keys seem to do something completely different

Well, once the knife rotates flat on the ground, its rotation alongside Y axis changes, and therefore directions of movement change. It's a bug that I intended to leave in the game.

 It ended up that by stage 6 or so, the arrow keys would just not do anything. I don't know whether it's a bug or a feature. 

That's a bug, when your knife don't touch the ground you cannot move, knew about it before the release but I didn't have time to fully investigate and fix it.

Thanks for playing, and for the feedback.

EDIT:

Regarding:

You can't hold down buttons; you have to keep on pressing them.

Well, movement is not physics-based and is calculated every frame, so OnKeyDown was the only option.  I could change the way it is in the future, without major changes movement while the key is hold down would be a mess, especially on higher framerates.

But I get your point.