If you are getting pretty ticked cause the boss who throws
knives at you keeps on killing you well here's a hint use the
shot gut when you are at close range and use the second hand gun
at full power but don't use the double barrel shotgun  cause it
only has 2 shots and also don't stay in one spot while shooting
him cause he will kill you pretty fast but doing this is pretty
hard though so if you aren't that good of a shot     at shooting
moving objects practice on the level before the boss and when
you think you are ready then try this hint