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