Here is the full list of all 45 The Mercury Man achievements.
Betray Andrew.
Release Cluck-Cluck.
Arrest Pastelo.
Arrest Geldallion.
Arrest Gobbarbler.
Execute Archangelton.
Finish gunsmith’s challenge.
Spend 2 or more hours in the game.
Finish a fight without using beer, cigarettes and medkits from the inventory.
Arrest Riccar Fire.
Finish Prologue.
Finish the game without using special ammo.
Collect all posters.
Use all types of special ammo.
Finish the game without deaths.
Drink 50 bottles of beer (during fights).
Smoke 50 cigarettes (during fights).
Use 20 medkids (during fights).
Execute Riccar Fire.
Release Riccar Fire.
Arrest Archangelton.
Release Archangelton.
Execute Gobbarbler.
Release Gobbarbler.
Execute Geldallion.
Release Geldallion.
Execute Pastelo.
Release Pastelo.
Execute Cluck-Cluck.
Kill Goldenmouth.
Deal with Victoridge.
Execute all bosses.
Arrest all bosses.
Release all bosses.
Kill all security guards.
Leave the bunker with Anne.
Clear the table during the train trip.
Take a train trip without napping.
Shoot Anne.
Refuse to shoot Anne.
Shoot Julia.
Bad ending.
Leave Mars with a friend.
Leave Mars with the man you love.
Leave Mars with the woman you love.