Cracking Open...Caverna Frantic Fiends

About Caverna: Frantic Fiends, from BoardGameGeek:

Orcs are ravaging the lands and threatening your caves and families! Can you defeat the ravaging orcs and bring back peace and prosperity to your people? In Caverna: Frantic Fiends, the second large expansion for Uwe Rosenberg's Caverna: The Cave Farmers, you have to face these hostile plunderers. Luckily, you can either use your proven axes to teach them a lesson or build traps to keep them away from the cave entrances altogether. You can even push them into these traps with stone or bribe them with wood to weaken their strength. Defeating orcs will bring precious rewards, but if you fail to drive them off, all your plans might be in jeopardy.