Originally posted by The_Tempest
No one's claiming that the dark side ending is "the official version." The dark side ending merely reflects the outcome of a different decision on the part of the player. No reason why characters' abilities would fluctuate.
Here:
Without hesitation, he stepped between Kota and the Emperor, taking the full brunt of the Sith lightning into his own body.
The pain was incredible, searing every nerve back to its individual cells, skewering each of them on white-hot needles. He had never before felt anything like this. He wanted to recoil from the source, to curl into a ball and let unconsciousness take the pain away, but somehow he stayed standing, seeing the world through a crackling blue light, and even took a step toward the Emperor.
"Go!" he hissed at Kota. "Hurry!"
The general hesitated only for a moment. He, too, had seen a glimpse of the future, the apprentice remembered. He knew that it came down to a simple choice: him and the Rebels or the apprentice and darkness forever. Gathering up the Rebels, Kola ushered them toward the descending ship.
Another staggering, painful step and the Emperor was within the apprentice's reach. With shaking fingers, he took the old man's bony shoulders in his hands and gripped them tight. The Sith lightning spread to engulf the two of them, fueled by both their desperations. The Emperor tipped back his head and howled in lascivious pain. Darkness threatened to envelop the apprentice's mind, but he clutched to consciousness with feverish will. He had to see this through. He had to.
A squadron of stormtroopers ran into the room, led by a limping Darth Vader. They raised their blasters to gun down the Rebels as they fled up the Rogue Shadow's ramp.
"No!" the apprentice cried, dropping his defenses to strike one last time at the Imperials. Energy surged through him. He felt as though a star had blazed to life in his chest. Driven by concern for his friends rather than himself, he embraced the Force completely, utterly, and was rewarded with strength that made his efforts with the dark side look like those of a child. His nerves were on fire. Streamers of light radiated from his skin. His bones glowed like radiant lava.
He saw rather than felt the massive shock wave that consumed a large portion of what remained of the observation dome. A glowing bubble of fire tore the stormtroopers to shreds and engulfed Vader and the Emperor. Shrapnel filled the air like dust caught in the beam of the Death Star's powerful laser.
Tossed like a leaf, the Rogue Shadow fled in haste, ramp snapping shut on its precious cargo.
The apprentice felt himself leaving his body again. Or was his body leaving him this time? He felt ripped apart by the energy that had flowed through him. Every cell was in shock; every fiber shook. The fire on his face possessed no heat at all. His limbs felt as distant as the farthest arms of the galaxy. He was amazed there was enough left of him to think at all.
Weakened by the blast, the dome's supports gave way. It collapsed into the superlaser dish, triggering a series of conventional explosions. Stormtroopers converged on the site. Through the dense smoke, two figures were visible from the apprentice's rarefied perspective.
Darth Vader struggled to his feet from the rubble, even more damaged than before. He reached out for support and found only his Master, scowling.
Taken from Star Wars: The Force Unleashed: Novelization
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