Here is the full list of all 49 Agents of Mayhem achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Use mission replay to replay and complete 3 missions.
Complete "Operation: Damocles."
Fully deck out Firing Squad in their signature outfits.
Fully deck out Carnage a Trois in their signature outfits.
Fully deck out the Bombshells in their signature outfits.
Fully deck out Franchise Force in their signature outfits.
Complete "Operation: Madhouse."
Complete "Operation: Red Queen."
Complete "Operation: Machine Man."
Complete "Operation: Star Power."
Destroy a Gravity Dominator.
Complete 30 MAYHEM & Agent Contracts.
Destroy a Golem in the open world.
Destroy a Dark Matter Fracking Station.
Complete the Moscow Global Offensive.
Fully upgrade all areas of the ARK.
Unlock 5 Warp Points through open world gameplay.
Complete LEGION Alert Level by defeating the LEGION Captain.
Reach level 40 on any agent
Hit 10 jumps in the city.
Destroy a Ice Barrage Emplacement.
Complete "Operation: Heaven Sent."
Build your first vehicle through blueprints.
Enter a secret room, inside a secret room, inside a LEGION lair.
Get 15 "All Perfect" hacks.
Destroy a Hate Machine Emplacement.
Take over each type of emplacement location.
Run over Legion 10 times.
Deploy your first agent to any LEGION region.
Use Gremlin Tech for the first time.
Complete a LEGION lair for the first time in Seoul.
Enter a secret room inside a LEGION lair.
Jump agent vehicle 50 meters in one jump.
Call in an agent vehicle for the first time.
Swap out an agent's weapon with a new look.
Take over an Outpost from LEGION.
Destroy a Drop Pod Launcher Emplacement.
Find and open a large loot chest.
Warp into the ARK for the first time.
Equip an Upgrade Core to any agent.
Equip your first gadget onto any agent.
Complete "Operation: Spinoff."
Complete a 360 in the air while in a vehicle.
Complete 15 Connected Contracts.
Unlock and Complete all standard VR room training programs.
Collect all collectible Shards in game.
Collect all agent vehicles.
Complete all Operations on Difficulty Level 7+.
Complete all agent personal missions and get all agents to level 20.