Phew. This is one surprisingly long game. It is by the same devs that did Jolly Rover which I also recommended! The game is basically tons of sokobans type of puzzles stringed together with awesome, witty, hilarious (lol at times) dialogue and a funny story. You have some pretty interesting characters and talking to them usually nets some sidequests of which there are surprisingly plenty! The game itself has quite some items to collect. Gold (loot) which are usually hidden in some weird places and comic scraps. The latter, once you collect all the scraps for a page, it unlock and turn itself into a full page colored comic! All these comics give the backstory of the main characters. I personally find them a nice touch.
By the time I completed the main story, I am only about 88% (there's a stats bar at the corner) done. There are also some hidden areas and I am not talking about those areas behind those security doors. No spoilers but there is really quite plenty to do here. Furthermore, every puzzle room you complete, upon returning, you will realize that the reset button has morphed into a commentary button. You get to read a few short lines of the devs commentary and they are quite worth reading. One little bug I had was that my achievement count for comic scraps got stuck at 3/47 but luckily upon finding all of them, the achievement triggered. Another little qualm was that upon completing the game (all of it), the stats bar shows 99%. It is a bug if you read the forums.