At the end of "Lucha Libre Get Away," the wrestler falls into lava. He gives a thumbs-up just before his hand disappears, as a reference to Terminator 2: Judgment Day.
On the level "A Cloud of Darkness!", when you get defeated by the Devil Cloud, if he is out of picture, his face will come out of nowhere and scare you near death!
In "10,000 Lums Under the Sea," the player will face toads that wear stealth camouflage and tri-lens night vision goggles. These enemies are a reference to the Splinter Cell series.
At the end of "Mansion of the Deep," the player must get past a laser grid. The music and room layout both resemble a scene from Ocean's 12.