Orc spider disapeared after our death at the milk molar station

[Basto]

Hi, our ORC spider disapeared and we are stuck in history cause we cannot beat them to succed the quest 

i saw alot on bee bug at berry field but nothing about milk molar station. if someone can help us.

i've screeshot the quest . Translate of the screen : "Defeat the O.R.C guards at the milk molar hideout"

thx