Fun little game - I like taking the Jump King formula and turning it on its head, literally, and the slash mechanic to bounce back up
Also thank you for the checkpoints, couldn't imagine trying to run through without them - its a small thing but still makes a difference
The pixel art was high quality, and the art for the start/end screen was also very good!
Not much new to contribute as far as improvements go that hasn't already been mentioned, so overall very solid submission, great work!