All Challenges

N7 Triune Trials

Challenge Type Difficulty Map Enemy Characters and weapons
N2.1 Resolve of The Shadowbroker (Trio)
 Trio Gold, Platinum White
 Cerberus
N2.2 Laying Down The Lawson (Trio)
 Trio Gold, Platinum Goddess
 Collectors
N2.3 183 Pull-ups (Trio)
 Trio Gold, Platinum Rio
 Reapers

Operation Alliance Troopers

Challenge Type Difficulty Map Enemy Characters and weapons
Mission 4 A Bug's Life
 Solo Silver, Gold, Platinum Glacier (Hazard)
 Collectors
Mission 9 No Kassa for Alarm
 Solo Silver, Gold, Platinum Hydra
 Geth

Fight for the Lost

Challenge Type Difficulty Map Enemy Characters and weapons
Week 1.3 Arete (Excellence)
 Trio Gold, Platinum Reactor (Hazard)
 Collectors
Week 2.1 Just One Step Closer...
 Solo Gold, Platinum Giant (Hazard)
 Collectors
Week 4.3 Koinon Quarion
 Trio Gold, Platinum London
 Geth
Week 5.2 Tactical Supremacy
 Duo Gold, Platinum Ghost (Hazard)
 Collectors
Bonus 3 Aigis
 Trio Gold, Platinum Vancouver
 Reapers
Week 7.3 Kleptomania
 Trio Gold, Platinum White
 Cerberus
Week 9.1 King of the Hill
This challenge has other variants 		Solo Gold Condor
 Reapers
Week 9.2 Ghost in the Machine
 Duo Gold, Platinum Giant (Hazard)
 Geth
Week 9.3 Anabasis
 Trio Gold, Platinum Ghost
 Collectors
Week 11.2 Just Another Day at Work...
 Duo Gold, Platinum Goddess
 Collectors
Week 11.3 Navarchos
 Trio Gold, Platinum Goddess
 Cerberus

Themed Duo Challenges 2

Challenge Type Difficulty Map Enemy Characters and weapons
Set 6, I Void
 Duo Silver, Gold, Platinum Glacier (Hazard)
 Collectors
Set 9, I Blue Suns
 Duo Silver, Gold, Platinum Vancouver
 Reapers

N7 Challenge Series

Challenge Type Difficulty Map Enemy Characters and weapons
N2.2 Laying Down The Lawson
 Solo Silver, Gold, Platinum Goddess
 Collectors

For Tuchanka

Challenge Type Difficulty Map Enemy Characters and weapons
Trio Challenge II Mass Effect: Andromeda
 Trio Gold, Platinum Dagger
 Geth

Weekly Themed Solos 1

Challenge Type Difficulty Map Enemy Characters and weapons
Week 8 The Shepard Clone's War Part 2 - CAT6 (Veteran-Insanity-Legendary)
 Solo Silver, Gold, Platinum Ghost (Hazard)
 Cerberus
Bonus 25k Views Challenge Mind Over Matter
 Solo Silver, Gold, Platinum Vancouver
 Collectors

Elysium Olympics

Challenge Type Difficulty Map Enemy Characters and weapons
Solo Challenge Precision Under Fire
 Solo Gold, Platinum Glacier (Hazard)
 Geth

Tales from the Trenches

Challenge Type Difficulty Map Enemy Characters and weapons
Week 14.2 This Is It, Isn't It?
 Duo Gold, Platinum London
 Reapers