the map is a bit big yes I do agree with that I did change the time from 4 min to 2 min for some reason before the end of the jam ended wonder what I was thinking on that. As for the player speed you can increase the speed at the coffin in the upgrade option. Can increase your time as well there but time costs a lot of blood.
Thanks for the walking down part I for some reason had his mouth on only one of the frames for the sprite sheet never caught that at all. 
easy enough fix though.