DiezelPower has released a major league update for its arena-based zombie shooter Nation Red, now available for download.

The patch brings a large amount of new content and changes to the game including two new zombie Barricade gameplay modes: Bridge and Warehouse, a new Brawler zombie boss and support for user-created maps and levels. Newly added NPC soldiers, new perks and achievements also accompany the update, with a list of bug fixes, improvements and other optimizations brought forth as well.

The file can be downloaded automatically for owners via Steam, restart the client if it’s not already there. A demo is also available for those who’d like to give it a spin. From the change log:

Nation Red

Two new zombie Barricade gameplay modes: Bridge and Warehouse

New Brawler zombie boss: A bomb disposal expert able to deactivate powerups such as mines, turbines, sentry guns, etc.

Support for user-created maps/levels

Shorter, more action-packed Free Play games with a new score multiplier for new leaderboard scores

Accurate weapon damage: each pellet from a shotgun blast causes damage. Also includes an enhanced flamethrower

NPC soldiers: Barricades and missions include soldiers trying to defend your position against the zombie horde

New interface

Several missions have been changed after user feedback

New perks: Anarchist, More Pain More Gain, Come Closer

New achievements: LockDown, A Ton Of Bullets, Unseen, Speed Killer, Resurrector and BackToBack

Support for Intel integrated graphics

New tutorial mode

Several suggested bug fixes and code optimizations

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