Here is a FPS zombie survival game I have been working on. Made in unreal engine 4 the AI zombies are designed to chase and attack when you player gets into view. The player and zombie models are both complete with animations. There are two weapon models with reload animations.  Some other mechanics include the HUD with health and shield system, mini map, kill feed and weapon and grenade icons. There are also frag and smoke grenades and weapon, ammo, and grenade pickups.