OSRS - Combat Achievement "No Pressure" Grandmaster Alchemical Hydra 

Completing the Grand Master Combat Achievement "No Pressure."
Tips:
- Run through Hydra on Green Phase a tick before his Poison Splat attack
- Run during Blue Lightning special. Just run around.
- HCIM: Teleport out if you haven't killed Enraged Phase within the first couple attacks after his Poison Splat. You'll notice me running around aimlessly at the end, I knew the Poison Attack was coming. Probably better to just reset in that instance, as I died at the end.