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