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