Multiplayer first person shooter games with 2-player online support

Halo: Combat Evolved Anniversary

Players: 4 local, 360 online

Destiny

Players: 3 local, 0 online

Far Cry: New Dawn

Players: 2 local, 0 online

Warhammer 40,000: Darktide

Players: 4 local, 0 online

ArmA II

Players: 4 local, 0 online

Call of Duty: Modern Warfare 2

Players: 2 local, 360 online

Close Combat: First to Fight

Players: 4 local, 0 online

Destiny

Players: 3 local, 360 online

Contagion

Players: 8 local, 0 online

Sniper Elite 4

Players: 4 local, 0 online

Killing Floor

Players: 6 local, 0 online

Syndicate

Players: 4 local, 360 online

Section 8: Prejudice

Players: 4 local, 360 online

F.E.A.R. 3

Players: 4 local, 360 online

Call of Duty: Modern Warfare 3

Players: 2 local, 360 online

No One Lives Forever: Spy in HARM's Way

Players: 4 local, 0 online

Serious Sam HD: The Second Encounter

Players: 4 local, 360 online

Sniper Elite 4

Players: 4 local, 0 online

Warhammer: Vermintide 2

Players: 4 local, 0 online

Generation Zero

Players: 4 local, 0 online

Star Wars Battlefront II (2017)

Players: 4 local, 0 online

Call of Duty: Black Ops Cold War

Players: 4 local, 0 online

Crime Boss: Rockay City

Players: 4 local, 0 online

DOOM

Players: 4 local, 0 online

Sniper Elite V2

Players: 2 local, 360 online