I really like the artwork and the music was nice as well!
I read in a comment below that roughly 70% deliveries should result in a boss encounter - I got one every time though hehe
I found the boss very challenging since it wasn’t that clear what to do. I did understand the ‘E’ parry - and I managed to do it - but I didn’t pick up on any feedback really that it hurt the boss. So it was still hard to understand how to beat it, which I didn’t manage to.. I also think that the distances to the mail boxes could have been a little shorter. But otherwise, beautiful game, nice work!