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