Indie developer DiezelPower has updated their arena-based shooter Nation Red with 5 Steam exclusives.

23 Steam Achievements
8 Steam Leaderboards
13 new player perks – Including 'Meat grinder'
New gameplay mode: Strategic
New weapon: Dual Glock
Various gameplay and interface improvements as requested by the Steam community
Plus, a few new hidden extras for existing owners :)

http://store.steampowered.com/app/39800/

Only $6.99 USD now here in South Africa