Deer won't walk/move Properly? Terrain water won't work for me?

Hey guys, Arkll here. Heres what happing right now. So i have a made a script which when you kill a deer it gives you points. This script does work, but however the deer is moving in a odd direction. It doesn't walk properly and the deer is always in the ground or always stuck cause of the way it walks. I need some help. Help pl0x?

Question? Anyone help me on a script that works for a deer to walk normally? Question? When I am creating terrain, the water is not properly working for me?

Show us the script