Absolutely love the server! Zombies are a challenge the first couple of days you play and it really does make you shit your pants sometimes. Zombies force you out of cover and keep you on the move.
EMP storm from Arma 2 is a nice feature and can be deadly when not paying attention to it. (get knocked out and munched on by zombies).
Loot is scarce but when you know where to go then better grab a bigger backpack.
Some of the dynamic missions are a beauty, don't even want to interfere sometimes.
Helpful admin is also a big plus!