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