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