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.