I played this game in Beta a lot and even if I don't have a lot of playtime since release, this is truly unique.
Yes, it's still a bit raw, the gunplay could be much more immersive but the overall experience imo is unmachted. The moment you first spawn in (be it SP or MP) remotely close to the front, your are at war. Explosions rattling your senses, smoke and poisonous gas taking your avatars breath(running around with a mask is terrifying), razorwire to avoid, desolate terrain and someone is being cooked in front of you by a flame thrower.
The natural reaction to being dropped into this hell is to dig yourself a hole to escape immediate harm and thankfully the game provides most classes with a shovel. Engineering becomes a matter of survival, else you will get sucked into endless respawn waves running into machine gun fire. Pro tip, jump into a existing crater that just blew up your friend and start there! If you crouch you can get safe relatively quick.
I find this game incredibly tense and can only play it for relatively short amounts of time, 30-90mins tops. (I don't have this with any other games really)
People in the reviews diss the player numbers, but I think this is a good reason for it. You are disposable, your fate and contributions often matter little in the overall picture (although it's certainly possible to have big impacts as single player or small groups) and that ditch you spend the last 5mins digging might have contributed nothing.
Like most games there is probably a good meta you could go for, farm those kills and make the game tedious and boring for you. I encourage people not to play this way but to let the war hit you. Turn off that 3rd person camera and get your head down!
The terrain transformation by player interactions, not only by building tools but also combat effects (grenades, artillery etc.) just by the matches naturally progressing is incredibly fun and better done than most games I have played. The area around the objectives you are fighting around often quickly turn into convincing ww1 hellscapes.
