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