Comparing Payday 2 to Left 4 Dead might be the only right and wrong way to compare it. Its a 4 man co-op game (or 1 man solo operation if you do not want friends), based around endless waves of police and delicious loot. Usually ending in disappointment or utter shouts of glee as you see the money roll into a virtual bank account.
The game has its share of bugs and weird things happening but still decent enough to make you play for several hours without noticing most of them. Stealth is a option on most missions and will make your life a lot easier if you got the patience or you can always opt for guns blazing and just nail everything that moves.
Oh and Overkill has the good nature of "you can join others that have DLC heists/missions even if you don't own it" mentality, making only some cosmetics, weapons and weapon mods DLC locked. Tough some would say these weapons and mods are fundamental for good team.

When you put on your face and hear the music slowly increase in pace you know you are the meanest ♥♥♥♥♥♥♥♥♥♥♥♥ alive, and the cops know it.

Comparing Payday 2 to Left 4 Dead might be the only right and wrong way to compare it. Its a 4 man co-op game (or 1 man solo operation if you do not want friends), based around endless waves of police and delicious loot. Usually ending in disappointment or utter shouts of glee as you see the money roll into a virtual bank account. The game has its share of bugs and weird things happening but still decent enough to make you play for several hours without noticing most of them. Stealth is a option on most missions and will make your life a lot easier if you got the patience or you can always opt for guns blazing and just nail everything that moves. Oh and Overkill has the good nature of "you can join others that have DLC heists/missions even if you don't own it" mentality, making only some cosmetics, weapons and weapon mods DLC locked. Tough some would say these weapons and mods are fundamental for good team. When you put on your face and hear the music slowly increase in pace you know you are the meanest motherfucker alive, and the cops know it.