Have you always wanted to fight the (undead) nazi's? Have you always wanted to go to hell? Have you always wanted to destroy a zombie factory? Are you a die hard zombie fan? Then this game is something for you. Zombie army trilogy is the first game of the Sniper Elite franchise I played and I never had problems while playing this game. The game has 3 chapters with each chapter taking me +/- 6 to 7 hours, so the full game takes around 20 hours if you are also interested in getting achievements and many different easter eggs.

Review about positive and negative stuff:

Positive

+ Sound and visuals really give a creepy atmosphere
+ Many different characters/enemies/guns
+ Coop is possible, so you can play it wth your friends
+ Controls are good and easy to understand (almost same controls as all other shooter games)
+ It has a pretty good story (but hey, alot of zombie games don't have a story)


Negative

- Can get repetitive after a while (didn't really bother me)
- A bit expensive in my opinion but who am I to judge
- Can cause anxiety attacks, heart failure, nightmares... (I never experienced those problems :P)


General
If you are interested in zombie/horror/shooter games with a story and a lot of killing, this game really is a must for you.



Edit for people who already own Sniper Elite Nazi Zombie Army 1 and/or 2:
This game already has the first 2 chapters in it so I recommend to buy it in a sale.
I bought this only because I wanted to play the 3th chapter since I already had the first 2 chapters.
This game is the only way to play the 3th chapter (it's worth it).