- Added a dog for the player's companion
- Give a command to the dog, like to stay, follow, and attack
- Dog can travel inside the vehicle and swim
- A dog can not be commanded when its heart disappears, keep feed em sometimes
- Zombies and Ellen got killed more easily than before now.
- Add more vending machines in the map
- Add a crafting item like dog food
- Some weight zombies explode when they die