Split into two groups, one goes left and one goes right.
Head through the zone and solve the various riddles as you go. Don't let one group get to far ahead of another, try to stay so one group solves a riddle then waits for the other to solve the riddle.
Eventually the two groups will rejoin each other in a large chamber.
Clear the chamber and after ten or so waves of x2 groups the boss will appear.
There are four idols in this large chamber, one person needs to be next to each. Throughout the fight, Anvilpaw will emote about drawing power from the idols. At this time, the four people manning the idols need to click the idol to shut it off.
It is possible to defeat Anvilpaw without deactivating the idols.
