Highly recommended for those who are achievement ♥♥♥♥♥s. You can get every single one of them through the game, just remind yourself to check the game's guide to make sure how to get some secret ones.
If you like point-and-click game, be sure to play Deponia, you won't be disappointed. Since I normally don't get the feeling of 'adventure' from some point-and-click games other than 'boring'; I did get it from Deponia. The art, the voice acting and the animation are fascinated, making the game more enjoyable. I didn't skip the cut scenes even once. The story and the characters are well designed. I enjoyed the story so much that I played them right away after I bought the game, non-stop through the end. The main character is a complete jerk, but also an opposite somehow, and that's why he's the most interesting one. There are also mini games which are fun to solve. And how you can combine items you find through the story is freakin' cool. Of how cool it is, I just can't spoil you unless you play it yourself.
Plus, you will be surprised how Deponia, the planet covered in trashes, can create such an environment you'll grow to love.