TL:DR: Devs got high on their own hubris after successful launch and nerfed gameplay into the ground to spite players because they want their objectively defined horde shooter to be "mil sim" and for you to play the game you paid money for "the way we want you to" rather than trust your creativity. I would wait until live service and updates end for the game so modders can fix the mess Arrowhead has left behind for us players. Buy L4D2 instead it set the standard for horde shooters for a reason.
This was initially a great game with amazing gameplay, community, and content. Unfortunately the devs started smoking crack the moment they got financial success and have done nothing but fill this game with artificial difficulty by nerfing any strategies that players come up with in a horde shooter that the delusional devs want to claim is a "mil sim" game. For example, it used to be that you could place turrets on elevation so that they aren't completely useless as the enemy AI AGGRESSIVELY targets them so they usually get destroyed before even firing a single shot. Now AI can STILL reach them at elevation but it at least allowed a few shots to be fired off to buy time.
The devs responded to player developed strategy by REMOVING THE ABILITY TO PLACE STRATAGEMS AT ELEVATION ALL TOGETHER, forcing the stratagem to bounce and has done nothing but cause a plethora of bugs and frustratingly unfair deaths and losses all because the devs got pissed that you didn't play the game you paid for "the way the devs intended." They turned a great horde shooter with difficult but fair gameplay into ragebaiting poorly balanced "mil sim" slop in which you have to pray the next meta isn't paywalled by their warbond system (which utilizes premium currency in order to access the newest stuff), and then abuse their overpowered nature until you have to buy the next warbond with hard cash because they nerfed the previous weapon set into the ground,
Save your money and buy Left 4 Dead 2, it goes on sale for dirt cheap, hasn't been touched in years, and is perfectly balanced the way it is because the people who worked on it weren't high on their own hubris (It also doesn't have live service slop which is a plus)
