Hello there!
Graphics and sounds are really good.
Platforming is fun, the balance between gravity and jump height is just right.
As Cammin has mentioned, you can do two double jumps if you just walk off the cliff instead of jumping up first. Basically coyote time has no timer.
I walked into each and every spike because they are not visible enough.
Not sure if it’s intentional or not, but if you land on an enemy very carefully (from a small height) and won’t move left or right, you can actually stand on top of the enemy without killing it.
In general very good job, keep it up!