Sentries are dressed in camo pants, black shirt or top and wear a black balaclava mask (mask with one hole just for the eyes) i can send a pic for reference
The Script
So it starts with Cassandra sneaking inside the compound, she then opens a bag which inside has a knife, a string and a pair of white latex gloves
Cassandra puts the gloves on and starts eliminating the sentries that are station in the compound
Scene 1
Sentry 1 and Sentry 2 are chatting and sentry 2 wants to go and have a smoke, sentry 2 walks to the front door but Cassandra comes from behind, puts one hand over her mouth and stabs her in the back with the other hand, sentry 2 gives a away some muffle cried before she eventually loses her life and Cassandra then turns and sneaks behind sentry 1 and puts one hand over mouth, sentry 1 panicks but before she can let out a muffled sound Cassandra cuts her throat
Scene 2
Cassandra moves to the next room, and around the corner sentry 1 is relaxing her back against the wall, Cassandra move swiftly to her, puts one hand over her mouth and stabs her 3-4 times in the belly and just next them is sentry 2 but she does not hear anything and after Cassandra puts sentry 1 quietly down she moves behind sentry 2 and puts her hand over her mouth and stabs her in the back
Scene 3
Cassandra moves to the next room and sees two sentries, she sneaks upon sentry 1 when sentry 2 walks aways, in a swift move Cassandra puts one hand over sentry 1 mouth and puts she other behind her head and snaps her neck and then does the same thing to sentry 2
Scene 4
Cassandra then moves into the next room, there is sentry 1 sleeping on a chair and sentry 2 is sitting also on a chair checking the paperwork on the table, Cassandra moves behind sentry 1 and puts one hand over mouth, sentry 1 starts to muffle but Cassandra is quick to snap her neck and then she takes the string she had been holding onto and strangles sentry 2 with it, there will be a bit of a struggle but Cassandra is quick to overpower sentry 2 and strangling her
Scene 5
Cassandra then sends a confirmation that the mission is complete and all witnesses have been dealt with, but unbeknownst to her (you) appear behind her, put one hand over her mouth and say “all witnesses must be eliminated” and then you stab her in the stomach and sides and she muffles out cries until she now longer breaths