Well - you say you dont know where the body is, but you know you're on the block right?
Have a play of Ripcoil (Oculus Rift game you can get free for buying any other Rift title) through Revive - you will see you get a full body including arms in that so it's largely doable I think. But it doesn't need to be that far. Have a play of Richie's Plank Experience and you can see how effective a good blob can be. Maybe just make the one you've done more visible?
Yeh I hear the existing sounds, I kinda meant a really nice throaty gravelly grinding slidey sound, to give the blocks real weight.
Cool, looking forward to seeing where it goes as it's ace so far.