All Challenges

Omega on Fire

Challenge Type Difficulty Map Enemy Characters and weapons
Duo I Disciples of War
 Duo Gold, Platinum Goddess
 Cerberus

N7 Triune Trials

Challenge Type Difficulty Map Enemy Characters and weapons
N7.6 Geth Out of My Lab!
 Trio Gold, Platinum Glacier
 Geth

Weekly Themed Solos 1

Challenge Type Difficulty Map Enemy Characters and weapons
Week 21 Monster Mash Special - Blood Rage! - Part 1 (Casual-Hardcore-Epic)
 Solo Silver, Gold, Platinum Glacier
 Geth
Week 21 Monster Mash Special - Blood Rage! - Part 1 (Veteran-Insanity-Legendary)
 Solo Silver, Gold, Platinum Giant (Hazard)
 Collectors

Servant of the People

Challenge Type Difficulty Map Enemy Characters and weapons
Duo 1 Monster Mash Special - Blood Rage! - Part 2
 Duo Gold, Platinum Goddess
 Collectors

Themed Duo Challenges 2

Challenge Type Difficulty Map Enemy Characters and weapons
Set 5, I Shield and Hammer
 Duo Silver, Gold, Platinum Giant (Hazard)
 Collectors

Tales from the Trenches

Challenge Type Difficulty Map Enemy Characters and weapons
Week 6.2 Snap Inspection
This challenge has other variants 		Duo Gold, Platinum Condor
 Reapers

For Tuchanka

Challenge Type Difficulty Map Enemy Characters and weapons
Solo Challenge IV Warlord Okeer
 Solo Gold, Platinum White (Hazard)
 Collectors
Team Challenge II The Blood Pack
 Team Gold, Platinum Reactor
 Reapers