I think you 100% nailed the SNES style graphics! This really looks, feels and sounds like a SNES game to me! I was able to get to the boss, but not defeat it. The platform section being so easy and taking as long as it did to travel through did make getting back to the boss a bit of a chore (perhaps a common issue for games in this jam using a 'restart' style mechanic to address the constraint, mine included!). I also have no idea how close I got to defeating the boss - a health bar might have motivated me to keep trying! I think you've got some good foundations to keep building a fun retro-style platformer here. :)