Ha sorry about that there is only one ending I just felt the question mark gave an air of mystery as to what is on the other side of the canvas, plus I quite like the character so I might one day extend the game or make a sequel...
The movement could have definitely used a bit of tweaking, the large knockback (and getting caught in knockback loops against walls)_ were all hacks to try and prevent death from getting hit multiple times by the same enemies. but again could have been done with a bit more finesse (or just a few iframes)