Slayer of Beasts

 is an Fallout 3 achievement on Xbox 360 and PC and a trophy on PlayStation 3.

It is granted for killing 300 creatures.

Tips

 * (PC Only) If you just want this achievement and don't care to cheat, use the console and simply type in "player.placeatme 0001CF7C 25" this will spawn 25 at a time such as a Radroach and kill them all, do this as many times as needed until your goal.
 * The Capitol Building is a brilliant place to bring you closer to this achievement/trophy as it is full of Super Mutants and is also the location of a Super Mutant Behemoth.
 * Aim to kill as many radroaches as possible in the vault at the start.
 * When looking for monsters to kill, you will probably find lot's of Raiders to help with the Doesn't Play Well With Others achievement.
 * DC is packed to the brim with creatures of all shapes and sizes.
 * Robots, Radscorpions, Super Mutants, Bloatflys, Trogs(The Pitt), and Feral Ghouls all count toward this achievement.
 * Near the mall southwest there are several radroaches that can be easily killed. I was level 23 on normal difficulty and encountered 10 radroaches. If you wait long enough they will respawn.
 * Mole rats are a good kill because they are common, attack in swarms, and above all are easy to kill.
 * Raiders are especially help if you want to achieve this trophy/achievement. They are very common in Metro Stations and usally attack in groups. Enclave Soldiers (Broken Steel), can possibly help since you are going to have to kill alot of them. Carefully aim each shot and go for the turrets, they count as creatures.