Bug on a quest

[Badatsum]

My friend and I started the quest where you have to hack two points high up and then go kill the O.R.C. defenders. After successfully completing the trash can one, we wanted to go kill the bees near where the blueberries are. When we arrived, two O.R.C. bees attacked us, we died, and since then we haven't been able to find the bees. Only one was killed; it was stuck in a blade of grass, but the other seems to be flying very high in the sky and never returns to the quest location. Because of this, we can no longer progress in the main story.