V0.2.1 : Unblessed Ankh will now only reset a boss level when the level is locked.

src/com/shatteredpixel/shatteredpixeldungeon/levels/CavesBossLevel.java

@@ -218,6 +218,7 @@ public class CavesBossLevel extends Level {
 		if (!enteredArena && outsideEntraceRoom( cell ) && hero == Dungeon.hero) {
 			
 			enteredArena = true;
+            locked = true;
 			
 			Mob boss = Bestiary.mob( Dungeon.depth );
 			boss.state = Mob.State.HUNTING;
@@ -245,6 +246,7 @@ public class CavesBossLevel extends Level {
 		if (!keyDropped && item instanceof SkeletonKey) {
 			
 			keyDropped = true;
+            locked = false;
 			
 			CellEmitter.get( arenaDoor ).start( Speck.factory( Speck.ROCK ), 0.07f, 10 );