New update!

-zombie mode added
-changed developers logo
-few changes in texts
-few performance tweaks
-fixed some colliders
-added more waves of zombies and ammo
-turned up enemy accuracy a bit
-added muzzle flash on shotgun
-fixed glow on walkie talkie
-enemy bodies delete after some time
-fixed muzzle smoke appearing on side
-fixed some broken windows
-fixed enemies randomly shooting
-fixed some broken interactive objects
-turned down zombie siren sound
-fixed enemy lighting through walls
-you can now shoot through things you
couldn't before (fences, doors, invisible blockers
Zombie barriers, windows, etc)
-added background to escape menu