It should be obvious the floor is wet the first time you go downstairs. If it isn't going down a couple more times will make it more clear, the more you do it, the more outline you can get of what you have to get to get past the stairs bit.
There's no walkthrough yet, i think there's enough clues in there without it. Am i wrong??
If no-ones completed it in like a month i guess i'll put a walkthrough out, but i don't want people to just take the easy way, and use a walkthrough, they'll miss half the work i put into the game