Get the Chinp creature without using the Ape
Start the challenge by activating the silver reward scroll ontop of a hut near Lethys' temple (once taken over the third village) Give the old lady some old people then when she get's tired command your creaure to pick up a child and bring it to her door. While this is happening press F5 to save your game in the temple then drop the child at the door and watch a cinematic scene. You should have the APE swap your creature. Load the game you just saved and now you shoud have the APE creature running to the hut drop the child at the door. Watch the scene and you will have the CHIMP creature.