The turning tide

The battle was more even now. We were still vastly outnumbered, but the balance was shifting, as more and more people streamed down the ice ramp, joining the fight, reducing HG's shadow warriors to smoke and dust. Whooping with delight, I resumed blasting. HG was staring round, his smile faltering, shock and horror breaking through. He saw me, and pointed a skeletal finger, quivering with rage. 'YOU! YOU DID THIS! My glorious army, my unconquerable force of millions! You did this, with all your meddling! You made this! DIE! DIE!!!!'
He leapt from his throne, face twisted in fury. I panicked, and thrust out a hand to defend myself.
I swear, I am NOT kidding about this next bit. A bus, a full size, double decker bus, shot from my hand. It slammed into HG, sending him flying, screaming, into the sea of his fighters. The bus kept charging forwards at great speed, smashing through HG's throne, leaving a pile of shards and splinters as it vanished, engine roaring, into crowd.
I stared at my hand, stunned, and then looked at where the bus had gone. 'I...I assume there's an explanation for that. Or there will be. Or something.'
FDiffy ran past, arms huge and hulkish, crushing fighters. 'That. Was SO. COOL!'
Laughing, I swept my hand round in a curve. The bus moved with it, turning round and driving through another group of fighters. I saw Playwrite' laser blaster failing, and hoardes of fighters were closing in on him, so I sent the bus screeching over to him, bringing it to an abrupt halt as it destroyed a huge group of his attackers. 'Get in!' I yelled, and waited until he clambered up into the drivers seat and started the engine before turning my attention back to HG. He was floating over the chaos, heading for the hole in the ceiling.
'No!' I went to follow him, but a flock of airborn shadow fighters blocked my way. I froze them, sending them plummeting to the floor, and sent my forcefield platform shooting after HG. I passed the bus, and saw Playwrite had picked up Doom, who was now firing her laser eye beams out of the broken front window on the upper level. 'Get everyone else! We need to wrap this up!' I yelled as I went by, and Playwrite nodded, heading for Tingle, who had stopped to clutch his head, as if in pain.
HG had gone past the hole. Confused, I followed him. He was heading for an end wall, which was opening, revealing a large passageway. Blackmage was near the opening, and jumped backwards as the wall next to him jerked, and began sliding away. 'Tell Playwrite I meant EVERYONE. Our side have to get out, I'm going to destroy this place.'
He nodded, as a dragon comprised of blue energy leapt from his circle of light, clearing a path for him. I saw there were now at least seven buses racing around the huge cavern. Good, they could make sure everyone got a ride to safety. I set off, up the slope, storming upwards in pursuit. Shadow fighters started to swarm up after me, but I couldn't risk blocking the tunnel. The buses would need a quick escape. I saw HG ahead, and sped up. 'Stop! Get back here!'
'Ha! Does that ever actually work?'
'Good point.'
I shot lightning at him instead, as the huge path continued to curve upwards.
It happened very suddenly, and I know everyone else felt it too. There was a sudden wave of cold, sweeping over everything and everyone, and then I felt the temperature start to rise again.
Ahead, HG faltered, then carried on. I grinned. It had worked.
I heard Playwrite in my head as I chased HG past a turn off that seemed to lead outside. 'Everyone's clear! Destroy the hordes!'
I avenged Doolittle the same way I did Precog. I clenched my hand into a fist, feeling the rock and earth around the cavern crash inwards, destroying it, crushing it into oblivion. I heard sounds of fighting behind me, closer than the noise of the destruction I was causing.
I reached the top of the tunnel, and saw it came out in the wide corridor we'd been in earlier that lead to the central chamber. I ran to it, and saw HG frantically typing away at the vast array of buttons. The big screen was flashing red, and there was a box at it's centre, containing three numbers. As I arrived, the numbers started counting down from 120. HG turned to me, his face alight with glee. 'You're too late, Hero! This is the end! You will ALL perish, and this world shall be mine! You fought valiantly, but you have failed. In two minutes, EVERYTHING. WILL. END!'