Great game concept! Unfortunately I got stuck on level 2 where I couldn't get through the gap between the box and the wall after I died in the 4th level. It's genuinely amazing that you made this without an engine and I bet there's a lot you could teach me about programming as I've only been able to make a texted based snake game with c++. From a design perspective I think there are a few changes you could make to the player to make them more fun to control (main thing I'd say is snapping the player into smaller gaps such as the one I got stuck on). Maybe a little indication of what a rune does as its a bit difficult to tell sometimes from just the sprite. For a game made in 48 hours this is incredible - I know I wouldn't have a game if I did it 48 hours!