Multiplayer action games for Xbox 360 with online support

Armored Core for Answer

Players: 0 local, 2 online

The Outfit

Players: 2 local, 2 online

Blazing Angels 2: Secret Missions of WWII

Players: 2 local, 4 online

Tenchu Z

Players: 0 local, 4 online

Zeno Clash: Ultimate Edition

Players: 2 local, 2 online

A Kingdom For Keflings

Players: 0 local, 4 online

Spec Ops: The Line

Players: 0 local, 2 online

Assault Heroes

Players: 2 local, 2 online

Mindjack

Players: 0 local, 3 online

Deadfall Adventures

Players: 0 local, 4 online

Contra

Players: 2 local, 2 online

Blazing Angels: Squadrons of WWII

Players: 2 local, 4 online

Inversion

Players: 0 local, 2 online

Golden Axe

Players: 2 local, 2 online

Arkadian Warriors

Players: 2 local, 2 online

Hellboy: The Science of Evil

Players: 2 local, 2 online

Monster Madness: Battle For Suburbia

Players: 2 local, 2 online

Damnation

Players: 2 local, 2 online

Super Contra

Players: 2 local, 2 online

Rocketmen: Axis of Evil

Players: 4 local, 4 online

Warhammer 40,000: Space Marine

Players: 0 local, 4 online

Metal Slug XX

Players: 2 local, 2 online

Root Beer Tapper

Players: 0 local, 2 online

R-Type Dimensions

Players: 2 local, 2 online

Star Trek: D-A-C

Players: 0 local, 6 online