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