no its not .. i came from NAGC and all event dungeons are normalized .. but the people still make SS rooms -__- they just can't read and also a tip .. just use amy's 4th job(SOLO) and you can get 20+ gold coins from the dungeon. If you know how to use amy wisely and skillfully in HPR that is .. If you do have Rexion(Fire Breathing dragon) Or Sirius(Galaxy Guardian/Wolf w.e.), just use their pet attacks the the caged box .. and if you're using amy you can spam her 3rd mp skill for 3-5 times making the mini pet bosses(The Hawaian Girl, The Monkey and Void) die easily... just a tip though .. but if i did help you guys ... your welcome :3 glad to be of service
*If You DOn't Have Those Pets you can just use thanny, Mini Pet Boss of Bermeshia's Last Stand( lol hope i'm correct for that dungeon) and Astaroth or Void's Upgraded Pet Skill*