How to Stealth a Hippo in a Cave

As the navigator, you could be the one to lead your way in. You see a pair of zombies looking down, but you've been very stealthy moving along the wall. They just keep staring at the open tunnel like they're waiting. So if you want the hippo to charge, it would have to jump up to these zombies. If you guys want to bring the ogre, you can. Because we can I would rather throw the ogre at people than my hippo.