Mission 60

At the very top of the level is an area with the gate. You should make your way up there and quickly destroy the enemies there to make your fight easier. It is also a good area to kill the Elite Overlord with your Bouncing Boomstick since it is close enough to get good bounces in.

The bottom area has a floor will will move to surprise you. It also has shields which impede you, but not the Overlord. Additionally, a pink trap floor will rise up as well. It is possible, but perhaps difficult, to use this against the Overlord.

This Overlord will disable you upon a successful melee strike. The more it hits you the longer it will last. If you use the secret from level 31, then it will reset all your disabilities after it wears off.

 

The secret will not appear right away.

 

The secret slowly descends from the middle pillar as the level progresses.