I haveplayed this game for close to or over 1000 hours (depending on when you read this) and I have several good and bad things to say, it is up to you to find out if this game is worth your time.
Lets start with the bad shall we. I have several major community complaints that I cannot let overkill shy away from even if they have fixed it.
1. Intel Graphics users denied access. Granted a file will fix that and praise the guy that did it but seriously overkill? Your prequel Payday: The Heist. Had pretty much no restrictions to computer software in terms of it actually running.
2. When launched the game would tank everything else until a restart. They say they have and are continuing to update the game. But if what they do is just send us uncompressed files that tax up our HDD. It won’t be worth touching.
3.DLC practices. You knew it was coming. I understand a company has to make money and will do nearly anything they can. But at the date of this review (4/15/15) it seems like they want nothing but $$$ and not the feedback saying “this is slightly overpriced.” Because a character with their own unique stats should be anywhere from $1.50 to $3.00 to call it a fair practice. Not $7-8 for a single character when they’ve proven that they can make them free.
4.Repetitive gameplay. I’m going to be honest, unless you have ADD or something similar, you will soon find this game becoming EXTREMELY repetitive. The enemies have the same tactic and the only difference is spawn points and how aggressive they are, which you can learn pretty quickly. Even in stealth there are guard paths that can be memorized easily.
Now that I got some of the bad things out of the way. Let’s talk good things.
1. Texture quality for the members of the studio. It’s not Crysis 3 level I know but for a small indie like company, they did damn well for what it is. It’s better detailed than valve if you look at their games.
2. More weapon variety than the prequel. I admit I liked the weapon selection in the prequel but being able to pick something like a .50 BMG sniper makes this game just a little more creative than the prequel.
3. More customization. I can only say that this game is on par with GTA when it comes to weapon customization. Want a silent .50 BMG sniper? You can do it. Want a completely loud and heavy damage MP5? You can do that as well.

Fair warning, I am a metal head.

I absolutely adore this game, so many things done right and executed well. with just a few exceptions that I think with some modding it would be achieved anyway.
Pros:
-get to slay demons that look different than the doom models and play uniquely to their type.
-it feels great to play on beat and slaughter hordes of enemies with the weapons.
-ultimates [bar 1] are useful and feel powerful and compliment any playstyle.
-glory kills are quick and satisfying.
-Guitar Hero and Doom had a baby and this is the result.
-Arcade scores at the end to show you how good you are compared to the one below you.

Cons
-not as much customisation as I was expecting, some of the cutscenes showed a blue fire for PAZ and I would have loved to see it as an easter egg if you beat the game on the hardest difficulty.
-Paz ultimate is a little confusing for those who enjoy a very aggro reactive playstyle, rushing into a horde, dodging occasionally and firing on every other beat. It would seem good against the aspects, but as it doesn't affect them, most other enemies can be beat relatively easily without need for a Paz ult. I think I used it....twice in the entire playthrough, and one of them was by accident.
-story twist at the end was interesting, if not a little....contrived, nothing against the narrative writers, but that twist could have been better handled.
-The phrase [headbanging is not required, but it is encouraged] is true except for when you enter an aspect lair the first time and get thrown at the change of beat, the first time it happened to me I died trying to figure out why my damage went so bad, then I did some headbanging and dodging before realising the song had changed.
-One could make the argument that there wasn't enough metal names in there, but at the same time, I know they charged a pretty penny to even be in the game, plus there might be talks with the labels and negotiations for even saying what band they are from.

All in all, 9/10 would most certainly slay to the beat again. \m/