how do you kill jarvia

[MJS WARLORD]

i have tried loads of times to kill jarvia but always fail , what is the best tactics for the team to use.

[Ilja]

Personally I have always just camped on the door, preventing anyone from running forward. My team used ranged weapons to deal with enemies and then turned to melee - with my main tank using threat gathering abilities - to counter her melee attacks.

She runs back to her safe spot soon enough. I prevented my crew from following, switched back to ranged weapons and spells to keep thinning her supporters. She was easy to kill, once she was alone.

[MJS WARLORD]

you mean run back to the door you came in , it shuts when you enter the room so you cant leave

[Ilja]

I am not running back. Just staying in front of the closed door and keeping my crew grouped there, to prevent them from running in to crossfire and traps.

[AbedsBrother]

Here's how I did it in my playthrough. (43:29) Normal difficulty.
https://youtu.be/NOyWW3YaM5k?t=43m29s

I went with two mages (Hero of Ferelden and Wynne), tank (Alistair) and rogue (Zevran).

[Sogreth]

This playthrough I'm doing right now (Hard), I tried to keep my party in the "main" area of that room, and I had Alistair (Tank) and Leliana (DW) deal with Jarvia and any other melee. I had Morrigan (with the Spellshaping mod) cycle through her big AoEs like Blizzard and Tempest right in the middle of the room just for the constant CC/Damage (it burned her mana pool real good though, so I popped quite a few potions on her). While my PC (Archer, and his name is Archer XD) dealt with the enemy ranged. And if I could, disarm a trap or two, just in case one of my own decided to run up (which they did).

I was actually surpised I got it on my first try, with no deaths too. Blizzard + Spellshaping is really strong.