There was one run I tried full dps with random roulette and got Snowcloak. No problems throughout the entire run except for the final fight when the healer died on the first howl move, then 1 dps died to the 2nd. . . it was just me and a BLM who brought down Fenrir for the last 40%ish (cant really remember just that it took forever). So intense lol

Usually I do dungeons with my gf healing though and have no issues going full dps. So much fun when fighting bosses and using all dps cooldowns then seeing back to back to back 1k+ damage.