The Lock, Key and Cup puzzle

Okay, this puzzle is HARD. Here is the complete answer, and the reasoning behind it.

First you'll find an altar and two Ultimate Power Orbs, protected by a force field. The altar can deactivate it, but won't talk to you until you've solved the Lock, Key and Cup puzzle ahead.

The Key puzzle (five heads pointing in certain directions): make them face the directions found on the wall in the Temple of Moo, west to east: North West North East South. You won't see a confirmation — it just helps with the next puzzle.

The Lock puzzle: "If you use the key, what would the mighty Moose be?" Bash down all the walls in the area and you'll find nine crystals, each showing a single letter. On one side you'll see the word "Moose" (in some order, depending on whether you solved the Key puzzle correctly). On the other side a letter is missing — it's 'E' (for Exit, perhaps?). Add it to the other letters and you get the answer: WEEDS. Tell this to the altar for a wealth of gold and one of the Hologram Sequencing Cards.

The Cup puzzle is optional but worth it for the Ultimate Power Orbs: simply drink all the cups (one of them will kill, petrify or eradicate whoever drinks it, so heal up afterward). Then return to the head that asked for the puzzles and it will ask for a field deactivation code. You can find this by exploring the Moo Master's room (past the Cup puzzle) and looking at the map — the walls form the letters J, V and C: JVC. Say it when prompted, and you can collect the Orbs.

This area is not covered by this guide's walkthrough section.