Velma being the one staging the faux mystery for the common good in this case, and thus becoming the movie's true hero.
Shaggy and Scooby also fight off a giant mechanical scorpion, even going to the point of hopping across stone pillars to survive.
Fred and Daphne leading an army against what they thought was an army of the undead in "Scooby-Doo and The Mummy's Curse."
Or the fact that the whole ghost plot of the movie was actually a scheme by Velma to catch the real bad guys. Though knowing that it was Velma behind the ghost-Cleopatra mask makes Scooby and Shaggy's Looney Tunes-esque antics/distractions completely hilarious.