Z-Aftershock is NOT just another zombie game that you chop, shoot, or throwing grenades.

You're a private soldier that sacrifice yourself to solve the conflicts to help NPCs in the village, building a safe house, a museum, find their belongings, loved ones, pets, restore some people's relationship, hunt for food and taxidermy the animals to show in museum too.

Your relationship with other NPCs indicates your good works in game, the rank in military tells the success of quests you finished.

You will find some secrets of NPCs, hidden creatures in the wood and the mountain. Furthermore, you can choose to or not to and change the game situations as well.

Don't overlook as it's just another zombie game, it's more fun/funny/serious quests to finish.