I've been playing for months, LITERALY months, so adictive.... My best 100% had 8 hearts left.... anyone else do beter? Is it possible to get 9?
The best I've gotten is 13 hearts left. I think this may be the highest possible. In order to do it you have to get ALL the gold treasure chests and the gnome (and the Dragon Egg) before using a single heart. It's not so easy, but I once got super lucky and I was in the groove, and managed to finish with 13 hearts left in only 36 seconds. Usually I take a LOT longer with a lot of really awkward mental logic and still taking some risks.
The main "trick" to getting 13 is just knowing it's possible in the first place. For the longest time I thought maybe 10 was the best possible, and I only rarely got it. I would sometimes get 8, sometimes even 9, but 10 was very rare. My mind was blown the first time I got 13. But since then, I've gotten 13 sometimes simply because I knew it was possible.