Nice little game :) I really liked the sound design and overall game loop.
Some suggestions for improvements:
- I was quite confused about the teleport mechanic. Maybe a little more feedback (like a particle effect) would help to communicate it.
- I think the movement would improve a lot if you used the mouse input continuously, so that the character keeps walking as long as I hold the mouse button.
- Often I bumped into invisible walls, where it looked as if the level would go on. Maybe you could close those opening so that it communicates more clearly :)