TOO hard.
Zombies spawn every step
Special Infected spawn quite recently
Underpowered weapons/ Too immortal tank
Grass floats.
Rare and distant weapon spawns.
First level wall, which needs to be broken BY ZOMBIES, not by you.
Conclusion:
I didn't even get to 2nd map, always failed on the first one. 5 tries is enough of me. Campaign is indeed beautiful but it's just too bad to be even made
Pros:
Cons:
Conclusion: