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