It was a nice experience. Lovely visuals, As mentioned in another comment the time to heal often felt too long to be used in combat. Though with more balancing I think it could be cool to see this type of mechanic maybe in a more action/bullet hell type of scenario.
The timer for those trials should've been centered and somehow to be brought to attention. It took me a few attempts to figure out that it is a time-based challenge.
I felt that the base movement speed was slow and ended up using the dash a lot to traverse the rooms. The silhouette for the dash could've been more exaggerated to sell the motion/speed of dashing even better.
Nice game overall! :D