Update 1.3 released, here is the change log 
-Added Physics explosions
-Added Grenades (placeholder animations for now)
-Added Hit Direction Indicator (Special thanks to r4nc1d for helping with the math)
-Added tracer effect option
-Added Steady-ADS animation checkbox to all weapon child classes
-Added FPP Weapon ADS sway option
-Added FPP optional blur while in ADS
-Added FPP animations for sprinting while unarmed
-Added FPP animations for jumping while unarmed
-Added ADS body movement sound
-Added ADS left-right for weapon child classes
-Added right arm rotation for weapon child classes
-Added Left-Hand IK support for TPS character mesh to weapon child classes
-Added crouch TPS no weapon animation
-Added basic recoil option (horizontal and vertical, aiming down sights lowers the values)
-Added slight gore when hitting the enemy with a critical headshot
-Added a “Buy Grenades” function to the vending machine
-Added TPS weapon positioning from child classes mesh
-Added sitting animation for buggy
-Added sitting animation for sedan
-Added new sounds for non-automatic weapons
-Added AI - Soldier can walk around, sees player, starts shooting, can aim, needs to reload, crouches when wounded
-Added AI - Zombie can walk around, goes to player, melee attacks
-Added AI - Charger runs to player, explodes
-Added AI - Simple patrol example
-Changed the rocket launcher projectile to support grenade jumping
-Changed Red barrel to use physics for explosions
-Changed climbing to actual state
-Changed ladders to require “Press E to Interact”
-Changed UnCrouch detection to ignore weapons and pickups
-Changed HUD to get removed from parent on player has died
-Removed legacy leftovers from the reload function from 1.0
-Removed the default VehicleGame driver mesh from the buggy
-Fix pistol names in the inventory (it was a typo, ok? I’m sorry XD)
-Fix in weapon reload animation for child classes (do once)
-Fix for a bug where the Double Jump would not reset
-Fix for a glitch that allowed sprint to be activated while in mid air and get additional boost
-Fix for vehicles so that they aren’t easy to push around
-Platforms: Linux support added (special thanks to LinuxDonald for testing)