With our templar leading the way
Now at this point you have two choices, fight your way through or charge to the end and take a few deaths at the doorway to the final boss. After which your healer(s) can self rest and bring the group up. You will loose a bit of Phoenix Dynasty Gold but in-exchange gain 10 minutes of time. Considering my group was 50 we skipped this part by charging through with our templar leading the way, you basically follow the path until you get into a large square chamber with the slime in the middle.