Yeah man, this is a really solid entry for the jam! I'm truly surprised this doesn't have a lot of plays. So here's my 2-cents about the game:
When I first booted it up, I noticed the movement was a little bit slippery. Not a dealbreaker but would definitely be appreciated if it was a bit tighter! It took a while for me to actually figure out what the gun did. I thought I was supposed to shoot the guards, and suck them up in the hole, but that didn't work and left me quite confused. It was exactly at the point that I realised I had to suck stuff up to knock out the guards that I really started to enjoy the game! The use of physics is great here, I really really enjoyed it. It's extremely satisfying to knock a desk over and hit two guards with it, while dodging their bullets. It's really something unique and a great implementation of the theme that I wouldn't have thought of before. One other critique is that after a while, when the floor is a mess, it's really hard to figure out what is still useable, and what is just junk. It might be useful to give the items that are still useable a light glow around the edges to define them as 'active.'
Anyway, great entry. I think you nailed it with the gameplay. Sounds and graphics are nice and minimalistic too, which is always appreciated. Good job!