Here is the full list of all 40 Epic Clicker Journey achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
1.000.000 clicks
Reach maximum level of shield
Reach maximum level of armor
Reach maximum level of weapon
Complete the map three times
Reach level 50 of Dungeon on third map level
Reach level 30 of Dungeon on third map level
Reach level 15 of Dungeon on third map level
Reach level 5 of Dungeon on third map level
Complete the map twice
Reach player level 100
Reach level 69 of Dungeon on second map level
Reach level 21 of Dungeon on second map level
Reach level 13 of Dungeon on second map level
Reach level 7 of Dungeon on second map level
Complete the map
Reach level 100 of Dungeon on first map level
Win gold using #LetsPlayAGame item
Reach player level 50
Open all closed locations
Loot #MuchTvWow item
Kill The Dragon
Complete the multiplayer location
Use #BeMyBFF item
Reach player level 25
Reach level 50 of Dungeon on first map level
Deal 1 million damage
Drink water from fountain in dungeon
Reach player level 10
Read information about authors
Kill 200 enemies
Use healing potion
Escape from battle
Open the locked location
Buy pet
Complete the first location
Reach level 25 of Dungeon on first map level
Reach level 10 of Dungeon on first map level
1.000 clicks
Enter the dungeon