[Shazgrot]

Tried the two (half) stacks of repair droids and one stack of guard droids as suggested elsewhere (mage, hard, level 36, optimization module and engineer's badge equipped for droid defense and leadership bonus). Here are some things I found useful to make that work:

1. Get the guard droid right between the drillers legs (whatever you do, don't look up!). I found that any other location allowed the driller to spawn droids out of a door in his chest. At least I hope that's where they come from.

2. In spite of advice to the contrary, hit the driller every turn with the guard droid stack, retaliation shmaliation. If you don't, he will sometimes shoot the repair droids. With stone skin and mana spring on, it doesn't hurt that bad, and when you add avenging angel on turn 2, it definitely hurts the driller worse than it does you. This means you don't need to buff the repair droids.

3. Keep the repair droids off the back two rows or they will get squashed when driller retreats. Keep them on row 3 (from the back) unless they are doing the end-of-turn repair on the guard stack. This allows you to shoot at full strength and avoids drillers arm attacks.

4. Keep everyone on a different column or driller will chain gun them, as noted above.

5. Wait for driller to move before acting with repair droids, and repair the guards when they get below 75% of original stack size. Then move back to row 3 before driller acts next turn.

When you don't need to refresh mana spring, stone skin, and avenging angel on the guards, hit driller with fire arrow (5 mana for 800 pts or 1100 with oil mist).