I just found this secret and it is awesome. right first you have to complete nights of the nine main quest. now go to the farthest part of the top left corner of the map. if u search round a bit you will notice a ghost (not an evil one, a one like the undead blades or the forlone watchman) now talk to him and he will say that you have granted the right to be one of the holy ones. then a staircase will come. go up it to heaven. its not like you expect with all clouds its like when your floating when that night is talking in nights of the nine. now heres the cool part, everyone youve ever killed and seen killed plus a lot of other people will be there. YES THATS RIGHT!!! MARTIN AND TIBER SEPTIM AR ALSO THERE!!! talk to them and they will give you the heaven bound armor this will give a +20 to all stats, 100% CHAMELEON!!! and a defence of 82. now if you look around youll spot a golden tower just like the one in the imperial city. Go in the door and climb up the staircase to the top and in the VERY HARD chest there will be a paradise sword. this weapon has a 35 attack and will give you the powers of an immortal (the ones in mancar camorans paradise) hope you find it.