Here is the full list of all 14 10,000,000 achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Repair all the rooms in your home
Score 10000000 at Rank Dungeon Master
Do 200 damage in one move
Score 10000000 with all potions active
Fully upgrade your sword
Gain your freedom
Defeat every type of dragon
Fully upgrade your staff
Fully upgrade your armor
Score 10000000 at Rank Explorer
Fully upgrade your shield
Score a 12 chain
Defeat a Treant
Fully upgrade your home