I got the feelings that they did the environmental physics and particle effects well, but somehow messed up with character animations and models. Like people mentioned before, the animations in some executions seem jerky and unatural, which is bad for a game that was relying on shock value to attract players. The moment I learned it was going to be a dual stick shooter, I expected the worst, since dual stick shooters seem to attract the worst kind of game development these days, probably because they're not terribly hard to create.
My hopes relied on the fact that, being a dual stick shooter, they would focus on making everything else about the game interesting, since the gameplay would probably be very simple, turns out that they got some things right but other things felt lazy and just bad game design choices. There's no variation in gameplay objectives, you just kinda shoot people with different things. They could've at least added some minor stealth elements, interesting AI, hell, even a decent plot would be nice.
Its not a murder simulator, its just a prettied up version of the original postal game that takes itself too seriously + edgyness. Even the early top view GTA games are better at this.