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