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