Nice one, I always wonder how much smaller it could be in 8x8 tiles
EDIT: Its a bit messed up, I was trying to makle 8x8 tiles and realised that they didnt line up. Look at the cracked rock, its missing the top row of black pixels.
EDIT 2: Its isnt really a full rip too, missing the switch tile, cool rotating thingy, locked door, round switch. Or did you mean to leave em out?