We are looking for a culprit who is at least skilled in operation of firearms, traps, and is in at least good shape in order to pursue the people they did. Potentially in other forms of combat if we're to go by Sariel's bruised knuckles being evidence of a fist fight. I would say that they'd generally have good physical strength, at the least.

As for the furniture...

Unclear. The two could have moved it themselves, if they woke up, and thought it was better to head their separate ways. It'd be easier to do with two people - particularly if it was removed from the inside.

[ He supposes he can figure...why, they might? Do that... ]