Here is the full list of all 40 The Last Sigil achievements.
Finish the game at Normal.
Finish the game at Hard.
Finish the game at Very Hard.
Reach level 50.
Reach fame level 10.
Kill 100 minions.
Kill 1000 minions.
Kill 5000 minions.
Kill 100 elites.
Kill 1000 elites.
Kill 5000 elites.
Block 100 hits.
Use any pet ability 100 times.
Unleash any pet 10 times.
Cast any curse 100 times.
Drink 100 potions.
Activate 50 shrines.
Recruit a character for each class.
Die once with each class.
Earn 100.000 gold.
Earn 1 million gold.
Equip a magic item in each equipment slot.
Equip a rare item in each equipment slot.
Equip an epic item in each equipment slot.
Equip a mythic item in each equipment slot.
Enchant 10 items.
Upgrade an item 10 times.
Add a socket to 10 items.
Craft 10 magic items.
Craft 10 rare items.
Craft 10 epic items.
Craft 10 magic jewels.
Craft 10 rare jewels.
Craft 10 epic jewels.
Summon any banner 100 times.
Find 10 different pets.
Unlock all the waypoints.
Open 50 treasure chests.
Destroy 1000 containers.
Gamble on 50 items.