Here is the full list of all 25 Royal Heroes achievements.
Collect the whole set
Clear a whole other dimension. Get Warping Power increase.
Come to dark side. We have cookies. And extra spell slot.
Veni Vidi Vici!
Discover all void spells
Find and kill all of famous vampires
Sacrifice a weak one to make your army stronger
Warp a few times
Craft a weapon that only the worthy can wield
Find and restore a famous weapon. Get Warping Power increase.
Discover all air spells
Discover all earth spells
Discover all fire spells
Discover all water spells
Hire a 4 star hero
Find and 'pet' at least 10 sheep
Flawless victory - no casualties
Do something useful. DOIT!
You can't be a winner all the time
Dont be a Batman - do it!