Pretty good! A couple things:
- The dash should let you go through the projectiles, as dashing into them will send you directly into the darkness
- There needs to be more visual clues as to both where you are and which runes that have been purified. I had trouble remembering which ones I'd already cleared.
- On the second boss, I felt way too zoomed out to see myself properly.
Neat interpretation of the theme and I like that the darkness closes in! Well done.