This should be a FAQ, but darn it I forgot to upload the changelog file.
So I will do that here instead !

List of Changes :

• Replaced all explosions sounds.
• Replaced and Added more variations sounds to all player's and vehicle's guns (Pistol, Flamethrower, Submachine Gun, Tank Cannon, etc....).
• Replaced and Added more variations to all engines (Train, Tank, Car).
• Added acceleration/engine loads to the Car and the Tank engines.
• Added weapon switch sounds depending of the weapon system (vehicles and players).
• Edited/Improved some machines sounds.
• Edited/Improved some footsteps sounds.
• Edited/Improved Capsules and Grenade sounds.
• Edited/Improved Biters and Spitters sounds.
• Edited/Improved Axe/Pickaxe sounds.
• Edited/Improved Fire sounds.
• And some tiny changes.