Online can be 2-4 players play the full 15 level. The level lasts a Level 45 min to 90 min. So you have plenty to do. Especially you have strategic approach in some places. When you die the other players have one minute time his comrade revive. Depending on the number of players coming opponents. If you play for example, to 2, are, for example 30 1 Super Zombies Zombie. If you play at 4 in this situation come 100 Zombies and 3 Super Zombies. Although a lot is going on on the screen, the game runs smoothly and the servers are Stabil.Per PS4 Chat gives you the opportunity to make a clean communication. In each level there are additional weapons like a bazooka or a Double-barreled Shotgun. Also, some MG positions one can occupy. Unfortunately, there are no tanks or similar to drive or use. There are 3 levels of difficulty. So something for everyone. In the levels there are checkpoints switch to weapons and recharge Muni. One can take grenades, dynamite and mines pitfalls meanwhile yet.
For single player recommended rather little. It quickly becomes boring. But for practicing optimal.
Thanks for reading. Strong buy recommendation !!!