Talk:SAS: Zombie Assault 4 Skills/@comment-177.229.126.184-20151102231706/@comment-15832243-20151102233400

You should max out in fast movment and body armour expert adn tough body (do note I'm talking about a tank build here) first as you'll need the survivability. I don't recommend running health regen until you have good armour and some points in tough body. next is concussion, which will stall zombies, making it  a great team support and utility skill, especially for holding back bosses. Put a few points in reload, and with the rest you can do what you want.