Hey guys, cool game!
Could have used better jump mechanics on the mushrooms, not gonna lie. If i press up while jumping on a 'shroom I expect to double jump, but first it does a low jump and then a double jump? That was frustrating.
Also you put ceilings right above some places where I had to jump, so this also created sudden unwanted things to happen.
There isn't enough of a visual cue to show that the dagger is on you and not in the ground somewhere, so a lot of "Oh...".
You should probably also buffer the throwing, because sometimes my dagger would be recalling and I'd shoot it out again, but the dagger just hadn't reached me, so nothing happened and I died instead.
With those improvements I think this would have felt a lot better, and my dying would feel more fair. There was a lot of the frustrating kind of dying you got in games of old where you felt like the controls were working against you.
Anyway, overall a fantastic take on the theme and very cool shaders. There were very few real bugs as well (some dying when I shouldn't, some living when I shouldn't). Also well done on teaching the player how to play the game in such an intuitive manner.