same here. i've been looking for it for so long. i forget where i got the info from, but there was some site i went to that had an entire listing of all locations of unlockable characters (except liu kang), all their costumes, all arenas, etc. but they had the same exact coffin listed for unlocking her and for her alternate costume, so i've been lost trying to figure that out. i haven't gotten ashrah's alternate, a few of the arenas (i think there's one that's in the labrynth in chaosrealm but i can't find it), kabal's alternate (though it said to fight him to get it, i can't find the spot where you're supposed to put that map he gave you, so whenever i try to talking to him, it's like all he says is to go hide it)

I can't find Darrius' , Sindel's, and Tanyas. I fough Tanya in Outworld and she didn't give me the alternate costume.