You played the web version or the PC version?? Because i heard one people that had strange responses by the moviment in the web version (and, in fact, that build has some issues...)... Maybe was that... Anyway i'll speed up the moviment (and nerf the stamina a little) in a future build...
Well... The dungeon is (infinitely) procedurally generated, so there isn't really a "progress"... The story isn't much important to the gameplay either...
About walking in the same door and getting different rooms... As said before, no, but that was the main gimic of this game...
(I could have that hinted\explained better, I know... I wanted to explain with a tutorial or something, but in the end i didn't managed to do it...)
Thanks for playing my game... =D