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