These beasts hadn't engaged with the ones that had dived down and were just moving around them.
Instead, they were climbing up the walls of the cave and heading towards this cliff at the entrance of this cave where we were standing.
It would only be a matter of time before they reached where we were.
Once that happened, they would be surrounded and cut off from the rest of the cave. They would be pushed back out of the cave by the beasts that were coming at them or at least stalled by these beasts that they wouldn't be able to fight for the treasures.
In short, there was nothing to gain from staying here.
Though jumping down also posed a risk.
After all, with the beasts coming over, it would only be a matter of time before the exit to the cave was blocked by them. Once that happened, it would be hard for us to leave even if we wanted to.
Once that happened, the only way forward was to charge into the large group of beasts in front of us.