points for a total of 500, they are quite easy to kill, you can dispose of them with a melee attack to not waste ammo. There are 20 Cave Rat's, they each yield 25 exp. The corpse next to where you start off has a Knife and 10mm x24. The game starts you off right outside Vault 13, the date is 05/DEC/2161 and the time is 0721, you have 150 days to retrieve the Water Chip.