This felt really good to play. It might be even better with music/sound effects. I noticed the same behavior that Slug_Overdose mentioned. I had 1 rare case where i fell into the "non accessible" area and disappeared.

wow this was so much fun! i wouldn't have made the player character black though (no racist). it blends too well with the platforms. also i'd consider making falling off the platforms instakill. this would make it more tense as you desperately try to not fall but consume the very ground you stand on. +having less platforms that always appear in the same place maybe. i found the gun really fun to fire.