Here is the full list of all 49 Mortal Online achievements.
Execute someone in mercy mode.
Deal 100000 melee damage.
Deal 50000 melee damage.
Deal 10000 melee damage.
Deal 1000 ranged damage.
Finish the tutorial.
Deal 1000 melee damage.
Ride a mount as a fledgling.
Puke!
Visit Sarducaa.
Fall 120 meters and land in water.
Get murdered by a group of at least 5 people.
Have 500 skills on a single character.
Unlock 20 titles on a single character.
Try to bribe 10 guards.
Try to persuade 10 guards.
Try to threaten 10 guards.
Successfully pick 15 locks.
Successfully pick 50 locks.
Successfully pick 100 locks.
Successfully pick 200 locks.
Successfully tame 15 pets.
Successfully tame 50 pets.
Successfully tame 100 pets.
Successfully tame 200 pets.
Successfully dominate 15 pets.
Successfully dominate 50 pets.
Successfully dominate 100 pets.
Successfully dominate 200 pets.
Hold a relic.
Be in a guild when a war starts.
See a war end.
Deal 10000 ranged damage.
Deal 50000 ranged damage.
Deal 100000 ranged damage.
Get saved while being executed in mercy mode.
Catch 10 fishes.
Catch 50 fishes.
Catch 100 fishes.
Catch 200 fishes.
Deal 1000 magic damage.
Deal 10000 magic damage.
Deal 50000 magic damage.
Deal 100000 magic damage.
Heal 1000 HP using magic.
Heal 10000 HP using magic.
Heal 50000 HP using magic.
Heal 100000 HP using magic.
Hold your breath for more than 150 seconds, then take drowning damage.