Originally Hunter killed one more Alien at the end -- the one that eventually stalked Hill along the pipeline. The fight was incorporated elsewhere.
Spoiler
INT. PIPELINE STATION - STORAGE
Low-ceiling, poorly maintained, a chain-link gate
sealing off the back half of the room. On the left wall
is a door, set into the right is a cage elevator.
Hill appears just as his first flare dies out. He
strikes another and moves to the gate.
Behind it are a handful of barrels, covered in grime,
each with a FLAMMABLE symbol in faded red. Above each
sign is the word CLEANER stencilled in black. In a
corner are three well-used pales, collecting dust.
The gate has a chain around it, but it isn't locked.
Hill pulls out the chain and opens the gates which
SQUEAK loudly.
He freezes at the sound. Spins around, waving the
tracker. Beat. Clear. He steps over to the barrels.
All of the lids have been sealed tight, with no
ostensible way of opening them back up. Thinking
quickly, he switches the motion tracker's sound back on
and grabs a bucket, then pulls a knife from his belt.
With one quick stab he opens a hole about a quarter of
the way down the barrel --
EXT. COLONY - ROOFTOP/ALLEY - DAY
Hunter is on his way back to the encampment when he
sees something in the alley below.
An ALIEN, prowling about. Oblivious.
Hunter kneels on the edge of the roof, his shoulder
cannon priming. The three-point laser-light activates,
aiming right at the Alien's back.
CRACK! A searing blue bolt hurtles towards the Alien --
It dodges, moving out of the way just in time. With
astounding reflexes it spins about and starts charging
for Hunter --
He fires again, the shot barely missing the Alien as it
scrabbles up the side of the building --
Then the Alien disappears, hidden by overhang.
Hunter edges along the roof of the module, searching,
searching --
The Alien's tail swings up and sweeps one of Hunter's
feet out from under him. He falls to the roof, then
slides on the slick surface, down the sloped roof --
The Alien reaches for him as he falls, gets pulled
along with him --
They both slam into the rain-slicked ground, Alien on
Hunter. The Alien's tail smacks the ground by Hunter's
head --
He grabs it with his left hand, wristblades out on the
right wrist, slicing off the bladed tip of the Alien's
tail. His attacker SCREAMS, clawing at his masked face
and unprotected stomach --
Hunter's right elbow slams into the Alien's face, using
the momentum to get the Alien off of him just enough to
get a foot under and KICK --
The Alien crashes into a pile of cables, writhing,
correcting itself, coming back completely undazed --
Hunter, on his knees, taps a button on his right
gauntlet. His wristblades shoot out, slamming into the
Alien's hip. The Alien collapses, squealing, then up
again, limping, ADVANCING --
The Predator reaches back and grabs one of the CHAINS
the disassembly crew were using, swinging it around and
up into the Alien's face --
The Alien is knocked back, to its knees --
Hunter is on his feet. WHACK, the chain comes down, on
the Alien's head, driving its chin into the cold, hard
concrete with a wet crunch --
Finally the Alien seems dazed. Hunter drops the chain
and flicks his right wrist. A TWO FOOT LONG SPIKE
telescopes out, the doctor's needle from hell.
The Alien is beginning to right itself. Hunter grabs it
from behind and stabs the spike through the Alien's
shoulder pad and THROUGH ITS NECK. Blood spurts as the
spike is removed, splashing harmlessly against the
shoulder pads.
It's far from enough. The Alien is still active,
clawing, screaming. Hunter flips the Alien, slamming a
knee into its chest, pinning it to the ground just long
enough to stab the spike down into its forehead.
The dome offers resistance. The Alien grabs the
Predator's arm, trying to keep it at bay, but the
Predator has the superior position. It drives the spike
down with all its weight, punching through the dome,
through the skull hidden beneath.
The Alien twitches as the spike disappears into grey
matter. Blood sprays the inside of its dome --
Its SECOND JAW shoots out, inches from Hunter's masked
face. He withdraws the spike and stabs it up under the
Alien's chin, pushing until he hears a now-familiar
CRUNCH.
The Alien twitches once, twice, then stills.
At length Hunter picks himself up off the Alien.
Breathing heavily. Exhausted, bleeding, but alive.
INT. PIPELINE STATION - STORAGE
Hill stabs his knife three-quarters the way down a
barrel and collects the ensuing cherry-red industrial
cleaner in a bucket.
When it's full he adds it to the other two he has next
to the door. In the light of a new flare he reads the
fading signage stencilled to it -- TO MAINTENANCE
TUNNELS.
Hill grabs the manual handle and hauls the door open.
The tracker is quiet. Beyond the door is a long, narrow
corridor, the surfaces seemingly made of conduits and
piping.
Rifle in one hand, bucket in the other, he moves in.
EXT. COLONY - PREDATOR ENCAMPMENT - DAY
The rain has come to an end. It's still overcast above,
clouds now darker than ever. Thunder rumbles, distant.
Hunter is in the camp, cleaning himself up with his
backpack medikit. He runs a red-hot implement across
the cuts on his stomach, cauterizing them. He does not
scream or whine -- the only hint of discomfort is the
occasional muscular contraction.
He checks over all his wounds. Stretches his torso this
way and that, looking for any tears in his fresh scars.
They hold. He replaces all his medical supplies and
reattaches his backpack to his armour.
The Predator begins checking his weapons. The spike in
his right gauntlet, the telescoping action of the
spear, the alien mechanisms of the smart disc, the
shoulder cannon's tracking capabilities.
Satisfied with them all he attaches them to his body
where he can, ready for action.
Everything where Hill deals with the Alien on the pipeline didn't happen; instead the action would just cut to him climbing along or some other riveting activity.
