Video of a guy doing first part part solo:
You get none of your weapons and have to basically punch everything to death with B.
Continue to move to each yellow way point till you get to the orange one where you have to find the two batteries in that area.
Then you move on to the boss whom you can only damage by leading into the three stacked pumpkins. Keep doing it till he dies and then go to the extraction point.
This can easily be done solo and dying once shouldn't be a problem.
Second part of this event is the same thing but you only have a 50 points of health and shield.
This part you will need a full group. You're going to get downed a lot and will probably die a couple times.
All in all not that hard of an event.