Here is the full list of all 65 This Merchant Life achievements.
Sell 500 weapons
Defeat the first conspirator
Build a guild house
Rescue your trouble magnet of a brother
Protect your brother and make a plan
Complete 100 missions (excluding donate missions)
Reach a global reputation of 500
Reach reputation of 100 in any settlement
Hire a hero
Apply 10 upgrades to your cart
Complete 50 missions (excluding donate missions)
Find out who sent you that stupid message
Complete 10 missions (excluding donate missions)
Pay off your starting debt
Upgrade your cart
Repair your cart
Unlock any skill
Hire a fighter
Visit all settlements
Meet all potential friends
Hire 100 fighters
Hire all heroes across a single playthrough
Defeat an attack by wolves
Fit a cart part
Have one cart part fitted in each slot
Apply 20 upgrades to your cart
Correctly answer a dozen riddles in one playthrough
Reach a global reputation of 1000
Reach a global reputation of 1500
Help a band choose a name
Gather the coin for a takeover bid
Defeat the second conspirator
Put the grey bards out of commission
Capture the third conspirator
Recover a clue to the identity of the conspiracy leader
Complete the story campaign
Make your first payment in payback mode
Make 5 payments in payback mode
Make 12 payments in payback mode
Make all payments in payback mode
Sell 2000 grain
Sell 2000 timber
Sell 2000 meat
Sell 2000 hides
Sell 2000 iron
Sell 2000 ale
Sell 2000 herbs
Sell 2000 fruit
Sell 2000 wool
Sell 500 pottery
Sell 500 cloth
Sell 500 wine
Sell 500 salt
Sell 500 medicine
Sell 100 books
Sell 100 dyes
Sell 100 spices
Sell 100 gems
Sell 100 silver
Sell 100 gold