This is an S+ run on the first Mission Containment.
You will only have to fight soldiers and cerberus dogs in this mission. Just shoot everything that moves. There is no real strategy required in this mission since it is really easy and straight forward. Use the Samurai Edge to shoot out of cover. To make your shots more accurate aim out of cover for 2-3 seconds and quickly shoot one enemy. When the mutated boss appears you will need to run away from him. Just shoot his eye (on his right shoulder) if he tries to tackle you.