Source: Steam Community (opens in a new tab)

Update notes
Shop
- NEW Explosive rounds
- NEW Shotgun upgrades
- New Rifle upgrades
Player
- Player is now able to melee wirh 'Right Click'
Zombies
- Boss zombies has been given a new collision detection
- Brian zombie now give you correct amount of points on 2X power up
Guns
- NEW rifles M1, Kar, L115, Barret
- New Shotguns Double Barrel, Spazz12, Trench Gun, BLUNDERBUSS
Controls
- Added all new information to the 'Controls' menu
Build and release context
Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.
Build 9756200 · public branch
Steam updated · First observed