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