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