Nice, i just watched your jungle biome seed video, good video Maybe you could rate the seed from a scale of 1-10 and let people send you seeds for you to review Oh and you just got a new subscriber
You can spam eater of world with a flail or minishark, but that will cost you a lot of money, oh and the armor should be around silver-shadow, but if you are feeling lucky you can go for it with a lower tier Good luck.
You need to shoot the ''orbs'' on the obsidian towers too, or else the dragon will get his health back everytime he flies around it! The best way to do that is to shoot them with arrows.