This was... weird. I mean, it was a good point-and-clicker. The puzzles worked, and were neither totally illogical nor too easy. Probably the only reason I played it through to the end was because the puzzles were compelling. The world-building is very thorough and clever. The story was decent, but predictable, and brought down by the characters. Deponia is a fun setting that deserves a better story and characters happening in it. The one-liners sometimes got a chuckle from me, but...
My two big complaints: First, the main character is not likeable in the least. They tried to write him a sarcastic, misunderstood oddball, but instead he's just a filthy, self-centered, misogynist jerk. He has a few decent one-liners, but he has remarkably few redeeming qualities beyond that. And hanging a lampshade on it by having literally every other character in the game also hate him doesn't actually make it better, and in some ways it makes it worse.
Second, what is with the rampant misogyny? The female protagonist (if you can call her that) is comatose for almost the entire game, and is treated as nothing more than an inconveniently large inventory item for most of it. Heck, one of the early scenes, she's basically being auctioned off (while comatose) by the mayor of the town to the men of the town to do what they like with her, and the major puzzle sequence is how the main character can eliminate his competitors to claim her as his possession. Heck, her name is Goal. She's a prize, not a person, for the entire game. And the only other female character in the game is the stereotypical violent, incessantly nagging ex, entirely one-dimensional, just one sitcom joke about her nagging after another. Is that all women are, Daedalic? Either pliant, helpless, brain-dead prizes to be won or violent nagging shrews? I think you can do better.
Long story short, if clever puzzles and thorough world-building are enough to carry you through a game, go ahead and get/play this one. If you're just really into point-and-click adventure for the sake of a good puzzle (like me), get it on at least 50% discount, and it might be worth your time. Otherwise, I'd pass this one up.
Maybe the sequel will be better.