At first I didn't want to share this with anyone but a couple buddies because I thought it was really a secret but it seems as if you all might like to try it yourselves so before I tell you what underlies behind those "??" level enemies I dare you to try really hard to get past those crazy guys. There's also a ghost if you look hard enough. (Devils Layer cave) [spoiler] It's actually no very hard, (by the way the spot im talking about is the cave in the devils layer with the green rock, its only accessible in explore mode i believe) all it really takes is a couple pumps of your flying to get over the entire army of them, might be a bit easier using a friend as a distraction. After you get past the main army keep going farther up in the cave and you can see an exit that leads back to the regular part of the map, there's an enemy called a shrieker at the exit of the cave it looks actually really cool.(like one I those eyeball enemies but way higher in level. And he's enclosed in a metal shell) There is another entire army right behind him. So what u have to do is fly all the way the right to fly on those big boulders and them keep going straight until they stop shooting at you. If you're in the right spot rn you should see the ocean in front of you...if you go on the edge of that cliff theres a little path you can take around the edge of the mountain theres a dead ghost...hopefully it's something special for you, for me not so much lol but it's a fun adventure! Will post pics later... [/spoiler]