Movement is satisfaying, visuals and audios are ok and you got your first loop.
It lack of feedbacks when you hit enemy or when you lose life. Some sound and visual would be good, In the first run you are not sure if you do any damage to enemies or you can stand on spikes and losing life without be aware of it.
Enemies can see you behind walls and they can't crossed spikes tiles, I also saw sometimes sword enemies chasing me backward.
But overall it works well.