-Authentic weaponry from the period
-Iron sights, and scopes for various weapons
-Realist health system
-Authentic civilian based cities
-Realistic infantry based combat
-Match based experience system
-The double bunker system (each side having a command base)
-External CCTV which can be covered by someone at base, or knocked out by the enemy
-First aid system, earn more experience by helping wounded colleagues
-Gas and respirators
-Specialist classed and equipment
-A thrilling and deep single player mode
-A training mode, with shooting ranges, obstacle course and such.
Many more, to make a suggestion, then please post on our forums, or simply make a post on our main page.