I have some 6 level t-maps decoded before the patch. They works well but there are some problems with the guardians. At 6 level spawn 5 guardians. Sometimes 2 ancient wyrm, 2 balron and a titano. Ok, they are difficult but also before the patch it's the same ( also if there was 4 monsters instead of 5). But... surprise! The "guardians" are really "guardians". I mean that they are around the chest. If you try to send away them they move for a little then come back around the chest. Obiouvsly it's impossible to attack 2 ancient wyrms and 2 balrons together. I think it's a little bug because to kill all monsters in a same time it's impossible! Someone has found the same problem to kill the guardians?