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