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