Every level of Frogun is absolutely teeming with collectibles to grab if you want to get full completion. While you’re rounding up all of the coins, gems, and pages, you’ll need to keep an eye out for each stage’s Obsidian Skull, which usually requires you to find a secret entrance (a huge hole in the ground). One early level called Perilous Aqueduct has a surprisingly well-hidden secret entrance that can be overlooked very easily if you’re not paying close attention. But no worries–in this guide, we’ll tell you where to find the secret entrance and claim the Perilous Aqueduct Obsidian Skull for yourself.
