With more work, it would have been nice to use the footstep chasing as a mechanic. Normally the yeti goes straight towards you, but footsteps change that behavior. I'm sure that mechanic could be fleshed out more to make interesting gameplay. Perhaps by putting some traps down or something similar. Or by getting the yeti away from specific locations while you go where he was guarding and then activating a footstep erasing function to break way from the chase.