shoot them with a shotgun
keep shooting them
get the other people
(not the chainsaw people)

The easiest way to beat it is pretty much what the first answer says use the shotgun to shoot them and knok them down when the battle starts then climb up the nearest ladder and kick it down and kill all the other people then stand somewhere where you can see where the chainsaw people are then its alot easier. You caould also buy a regular rocket launcher and shoot it so it hits both of them ive never tried it this way but it will probably work.

ez.... u find an alley, where they can only come at u from 1 direction (entrance to the map) take out a magnum (if its round 2+ or just keep blowing them in the face with shotgun, or kicking them hella times after u shoot them in the head with a TMP/handgun)

u take out typewriter and shoot him 3 times or rocket launcher if they are from far
distance u kill them easier

200 capacity tmp to the head if not indicary grenades.

Use a flash grenade, take out the other lackeys from a distance with a handgun,ect. Don't
use the shotgun, otherwise the spray may hit the chainsaw wielders and negate the effect
of the grenade. Then, find a safe corner and blast the chainsaw grannies when they come at
you. Reload as often as you safely can.

aim for there heads and whenthey back up kick them and shot.adn throw a grenade

shoot them with tmp then climb upa ladder now when they start to climb shoot them in the
head with the shot gun till they die

i beat them for the first time after beating it 6 times i used a tmp, shotgun, and 3
grenades it was hard i would say yes but its easier if u upgrade ur weapons first

get 5 flash grenades 6 hand grenades and 4 incindenary and a shotgun with 20 bullets use
ten bullets on one of em and 10 on the other then use 2 incindenary grends on 1 and 2 on
the other then 3 hand grenades on both each then use 2 flash grenades on 1 of em then
kick her she will die then use 3 flash grenades on the on the other then kick

ps:i have completed it 130 times