help with ice caves of sorrow

What do you do near the end when your supposed to take evennia to the boat? Do you have to fight that huge group or mursaat or not?

The mursaat will wipe the floor with you. You should run and keep running until the end of the mission.

-Virt

its easier to stop and wait 5 mins, the mursaat will just walk past. then just slowly walk behind them. they will eventually walk straight into a catapult bombing zone and 90% of them will die. then theres like 2 or 3 left that you can kill much easier