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