All Challenges

Fight for the Lost

Challenge Type Difficulty Map Enemy Characters and weapons
Week 7.2 Abort, Retry, Fail?
 Duo Gold, Platinum Reactor (Hazard)
 Geth

Themed Duo Challenges 2

Challenge Type Difficulty Map Enemy Characters and weapons
Set 3, II Space Whaling Inc.
 Duo Silver, Gold, Platinum Hydra
 Collectors
Set 8, I Bosh'tet
 Duo Silver, Gold, Platinum Hydra
 Geth

N7 Triune Trials

Challenge Type Difficulty Map Enemy Characters and weapons
N5.6 Haestrom Thermonuclear (Trio)
 Trio Gold, Platinum Giant
 Geth

Weekly Themed Solos 1

Challenge Type Difficulty Map Enemy Characters and weapons
Week 15 Haestrom, Thermonuclear (Veteran-Insanity-Legendary)
 Solo Silver, Gold, Platinum Giant
 Geth

Tales from the Trenches

Challenge Type Difficulty Map Enemy Characters and weapons
Week 11.1 In the Pitch Black, They Sound as if They Were One Person
This challenge has other variants 		Duo Gold, Platinum Reactor
 Reapers

Servant of the People

Challenge Type Difficulty Map Enemy Characters and weapons
Team 3 Normandy Engineer Squad
 Team Gold, Platinum Jade
 Reapers

The Compact

Challenge Type Difficulty Map Enemy Characters and weapons
Trio 2 Normandy's Finest
 Trio Platinum Reactor
 Collectors

Omega on Fire

Challenge Type Difficulty Map Enemy Characters and weapons
Duo IV Omega is My Home, This is My Pilgrimage
 Duo Gold, Platinum Hydra
 Cerberus

Kirrahe Airlines

Challenge Type Difficulty Map Enemy Characters and weapons
Flight 1 Pilot Training, Old School
 Solo Gold, Platinum Goddess
 Cerberus

Themed Duo Challenges 1

Challenge Type Difficulty Map Enemy Characters and weapons
Set 2.I Surviving Haestrom
 Duo Silver, Gold, Platinum Giant (Hazard)
 Geth

For Tuchanka

Challenge Type Difficulty Map Enemy Characters and weapons
Team Challenge III Virmire
 Team Gold, Platinum Jade
 Geth