The key to stage 14 is to put Demon Towers at either enterance, on high ground, and upgrade them into the area burst one, as opposed to flame jet. As you'll only get one shot off on the Ninja Champion, this one will slow, do lots of damage, and may cause burn if you have Flame Mastery. But it causes enough damage that you MIGHT be able to nuke him with Meteors. Food for thought. Still a great game.
I had so much fun but after a wile he stopped growing so I quit. The map should keep growing with you so you can keep growing too.If this game got some upgrades it could be really good.