how do u kill morrow? ive killed her like 20 tijmes but she keeps respawning

I only killed her once and won.

I kno what your problem is. There are 4 morlocks in the corners that you must kill after you kill Marrow. They will only appear after so use a special to take 'em out quickly, here are the steps_ _ _
Marrow
Morlock
Marrow
Morlock
Marrow
Morlock
Marrow
Morlock
Marrow (last time)

kill her once then run to a corner and a resurrection mutant appears kill it then kill marrow again then run to another corner kill that resurrection mutant then kill marrow again go to another corner kill that mutant kill marrow for the fourth and final time and run to the last corner kill the mutant If marrow lives on then just slice her down again you have to be quick and very strong for this level so you should use wolverine Magma Emma Frost and Cyclops and you should win also there is a save pad so use that before talking to the healer make sure wolverine picks up the stat point and put it to your healing or main claw attack.