Try to scare the orcs
Orcs are really big and tough, but they’re not very brave. If you can think of a way to scare them then they will run away, leaving the sack with the pixie in it behind.
But how will you scare them? You look around for something you could use to help you. There’s a pile of old junk behind one of the boulders. You search through it and find an old metal bucket and a big brass handbell.