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