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