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