This was fun! Parkour was definitely a little janky in terms of wall and floor collision detection. Movement was definitely floaty, my hand is tired from playing. Boss was a good challenge, but his laser sometimes would just shoot past me or shoot me through a pillar. I was pleasantly surprised that headshots did extra damage, so bonus points for that. Not being able to see my bullets was also a little frustrating.
Only issue I encountered (besides sticking my head through walls sometimes) was that the low health canvas element stayed active after I had died and respawned.