Cool game! I like the meta narrative utilizing the “boss”, and the fact that it also uses the video-game interpretation of “boss” is good too.
I think the player should be better differentiated from the background - maybe they could be a brighter color? Also it’s kinda weird that the dash seemingly doesn’t have any invincibility. I guess adding that would let you cheese the shockwave phase, but it still felt weird (probably would’ve messed me up severely if I, uh, actually used the dash a significant amount).