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 15 Connected Contracts.
Complete all agent personal missions and get all agents to level 20.
Use mission replay to replay and complete 3 missions.
Unlock and Complete all standard VR room training programs.
Complete the Moscow Global Offensive.
Complete 30 MAYHEM & Agent Contracts.
Collect all collectible Shards in game.
Complete a 360 in the air while in a vehicle.
Enter a secret room, inside a secret room, inside a LEGION lair.
Destroy a Golem in the open world.
Unlock 5 Warp Points through open world gameplay.
Fully deck out Firing Squad in their signature outfits.
Destroy a Gravity Dominator.
Fully deck out Carnage a Trois in their signature outfits.
Complete "Operation: Damocles."
Complete all Operations on Difficulty Level 7+.
Reach level 40 on any agent
Fully upgrade all areas of the ARK.
Complete "Operation: Madhouse."
Collect all agent vehicles.
Hit 10 jumps in the city.
Complete "Operation: Red Queen."
Complete "Operation: Machine Man."
Complete LEGION Alert Level by defeating the LEGION Captain.
Complete "Operation: Star Power."
Fully deck out the Bombshells in their signature outfits.
Fully deck out Franchise Force in their signature outfits.
Run over Legion 10 times.
Get 15 "All Perfect" hacks.
Destroy a Dark Matter Fracking Station.
Complete a LEGION lair for the first time in Seoul.
Build your first vehicle through blueprints.
Destroy a Hate Machine Emplacement.
Destroy a Ice Barrage Emplacement.
Take over each type of emplacement location.
Complete "Operation: Heaven Sent."
Enter a secret room inside a LEGION lair.
Deploy your first agent to any LEGION region.
Jump agent vehicle 50 meters in one jump.
Call in an agent vehicle for the first time.
Take over an Outpost from LEGION.
Destroy a Drop Pod Launcher Emplacement.
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.
Use Gremlin Tech for the first time.
Find and open a large loot chest.
Equip your first gadget onto any agent.
Complete "Operation: Spinoff."