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