You had me at "Knight" I love a sword & board character and will always support them. Great pace on the game, and I was impressed with being able to bash into the bandits. And that they weren't completely static either, which was a nice touch.
I'm sure that you've got a load of stuff in mind that you'd like to do so I won't provide too much feedback there but the key things for me are:
1. Kill the character when he falls down, or teleport them back up with some HP missing.
2. Double jump!
3. I'd love to be able to attack with left mouse button.
Looking forward to seeing how it progresses!