The biggest problem is what Corey Willis said, that all the objects are physcis based and it's difficult to even stand on anything. I try to pull a few furniture together and try to stand as high as possible, and 2 seconds later I'm already dead.
I think it'd be better, if the spiders didn't raise so fast and you've a little more time and chance to pull a few things together and stand on it.
I do like the concept though.