I found the final boss easy, didnt need any potions or healing spells and had my trusty carrot wand. Though I did complete all the quests before so maybe I was over prepared?
Wow! Just beat the end! Tried a while ago and failed miserably xD Thanks to harpnote999, her advice got me the win with no HP lost :D
"i beat the end with full health.to win just keep spamming hobbits,angels and dragons none stop."
 "Arkandian Crusade"){kind=icon}
 "Tentacle Wars"){kind=icon}
 "I Remain"){kind=icon}
 "Cursed Treasure: Don't Touch My Gems!"){kind=icon}
 "Epic war"){kind=icon}