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