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