short, glib review: Benny Hill Skit Simulator 2013 (later patched to become the Superior Sociopath Simulator 2014)
Let's be frank here, most of you have this from a Humble Bundle or 20 now. It's a good game, BUT, play it MP. Find a pal or three and co-op the campaign. Push through to the end of the first one* at least, it's around 18 stages. You'll get new thieves as time goes on, experiment, shake up who uses what if you're stuck. It's a great game in this context. Solo, though, it's kind of a pain in the ♥♥♥ stealth title. I played half of the game alone and it involved more skulking than stealing.
It's fun! It just requires pals to really bring out the true chaotic underbelly of the game as someone lingers a second too long and suddenly all the guards are rushing towards one corner of the manor and do you help that guy or do you jack everything you can in the meantime and maybe pick up his corpse later? No honor among thieves, you know.
Enjoyed the hell out of it - stopped after campaign #1 because my group finally went "Yeah, that's a good amount."
* There are 4. Do not let it be said this game didn't get post-release support, the final patch added an entirely new set of missions on top of two entirely redesigned game modes and a crazy amount of Workshop support.