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