Aliens are not major characters,thus,no Stormtrooper Effect!
No Stormtrooper Effect means Stormtroopers are not piss poor bumblefucks and are,as they are normally meant to be; Elite Space Marines!
My moneys on the Stormtroopers,though Aliens are also quite vicious at such close range,so I can expect there will be numerous casualties for both sides.
But in the end a lone Stormtrooper Officer rises from the mess of blood and burned carcasses of the massacere.
He throws off his beaten and malfunctioning helmet,his armor busted up,cracked and has small splatters of Alien acid blood which slowly and tediously eat away at the surface of his blaster-proof cocoon.
He examines the area one last time,cautious and on alert for any more of the extraterrestrials as he contacts Lord Vader to evaluate a status report.
"My lord........all extraterrestrial intruders terminated.......for now.", he states as he replaces the drained battery of his DLT-19 heavy blaster rifle and gives a hard slap to make sure it's set.
The Officer turns to the abandoned hallways,the sounds of hissing and scratching heard ahead,as he trods deeper into the pathway, ready and willing to give hell to the life-form(s) that may be hidden ahead.....