Here is the full list of all 56 Grim Clicker achievements.
Upgrade weapon to quality 15
Get 20 wisdom
Get 15 wisdom
Open shard chest
Upgrade weapon to quality 10
Complete 100 quests
Get 20 dexterity
Complete 50 quests
Perform 50 rituals
Remove three locks
Open 30 chests
Get 10 wisdom
Get 5 wisdom
Get 20 strenght
Get 15 strenght
Kill 10000 fireflies
Get 15 dexterity
Kill 20 bosses
Get 10 dixterity
Click 50000 times
Reach Zone 50
Upgrade weapon to quality 5
Kill 500 champions
Open 20 chests
Kill 10 bosses
Get 10 strenght
Remove one lock
Upgrade any item
Open 3 boss chests
Kill 1000 fireflies
Kill 5 bosses
Open 10 chests
Find people on the shard
Upgrade any weapon
Get 5 dixterity
Perform 20 rituals
Get level 20
Collect 500 candles
Collect 250 candles
Get 5 strenght
Perform 10 rituals
Get level 10
Complete 10 quests
Click 5000 times
Collect 100 Candles
Reach Zone 10
Collect 50 Candles
Dissasemble any item
Kill 25 champions
Open 1 chest
Perform 1 ritual
Get level 5
Kill 20 fireflies
Reach Zone 5
Click 500 times
Kill 1 champion