The Bleed debuff applied from the Einherjar attack can be cleansed, but the Bleed debuff from the Gungnirs can't. It's not only a heal intensive fight, but also HUGELY dependent on DPS. They have to not only meet the strict DPS check (strictest of all the 2.0 trials) but they also have to get those Gungnirs down as soon as possible. The longer they are alive, the more the DPS are going to find themselves dead from the Bleed. DPS must also avoid 100% of all other damage in these phases because the healer has to focus on party heals and tank heals, and won't have the time nor MP to deal with the special butterfly who likes to stand in Hall of Stone.