The Kerotan Frogs are a series of hidden, green frog figurines scattered throughout every area of the game. There are 64 in total. Shooting all of them with any weapon (even non-lethal) will unlock the Stealth Camouflage item for subsequent playthroughs, a highly valuable piece of equipment for achieving high ranks. Each frog makes a distinct 'ribbit' sound when you are near it, which can help in locating them. They are often placed in obscure locations: on ledges, under bridges, behind objects, or even high up in trees. It's recommended to use a sniper rifle or a weapon with a first-person aiming mode to accurately hit them from a distance. Keep a checklist as some areas cannot be revisited.
