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