I could totally stat up this party in Encounter Critical without breaking a sweat. A planetary ape mad scientist, a frankenstein warrior and two human criminals.
I've got about a dozen screencaps of background shots like this, but I'm going to assume not every Gameblog reader likes lava as much as I do. So I'll post just this one.
The party marches along a narrow pathway between dangerous bursting lava bubbles and lava falls.
They eventually pass behind an even an even bigger lavafall.
Holy crap! Four-armed dragon! The party flees into a nearby tunnel. Riddler wants to wuss out and turn back but Solomon Grundy turns and snarls "No! We go on!"
They emerge into a second large cavern.
The super-awesome MacGuffin is almost in hand...
"Don't worry! I, the most useless member of the Legion of Doom, will go get the treasure!"
Crap on a stick! A giant lava monster! The rest of the party doesn't think twice about abandoning Leaves-Clues-For-The-Heroes-Man to his fiery fate.
Not wanting to fight Surtur's nephew, the Legion of Doom trick the Superfriends into doing their dirty work for them.
A monkey, a dead guy, and a girl in cat pajamas can escape this dragon, but a flying dude cannot. What does that say about Hawkman's basic competence?
Remember that lava monster? Good thing Superman memorized cone of cold that day.
If I was the DM here, I'd probably rule that the lava in the lake will eventually re-heat the monster. Maybe d6 turns later.
Following some Legion of Doom trickery and some kryptonite, our heroes are nearly eaten by this awesome giant crab with tentacles. Don't worry Superman, Hawkman will save you!
This lava dungeon adventure isn't even the whole episode. I'm leaving out the part where Braniac and Lex Luthor kidnap the U.N. building, the blotting out of the sun, the water creature that gets turned into an ice monster, the Justice League computer calling Robin an idiot AND a giant yellow robot!