For medium badge:
1) Watch ad to boost reward (30s for 4 hours of rewards)
2) Unlock Gnome Factory (250g)
3) Heal and repeat are your friends - if you need extra success % unlock Wandering Bazaar)
4) Unlock thieves and fairies to rank up faster, tavern to go on all quests available.
Overall this badge should take like 30 minutes.
 "Questmore"){kind=icon}
 "Adapt or Die"){kind=icon}