Back at the Throat of the World, Paarthunax is waiting for me. I notice that he's also retreated a safe distance from what he calls the 'Time Wound'; the tear in time through which Alduin was able to enter the world. I don't like how this is panning out.
Reassured by Paarthunax's gravely tones, I pull out the Elder Scroll and try to read it again, this time facing the Time Wound. The characters now make sense to me, and I'm drawn into a vision. A vision, it seems, of the past, but in this same spot!
It seems that even a thousand years ago, or however long ago it is that I'm looking back, these Nords still liked to talk a lot. After a great deal of dialogue, it seems that a powerful mage used the very Elder Scroll I'm holding to cast Alduin forward in time. To our time it seems. Thanks buddy.
More importantly, and the point of the exercise, I learn the words to Dragonrend, a shout to force a dragon to land. With timing that could only be described as theatrical, my old friend Alduin arrives at the scene. It seems he's gone from saving my life, to commanding others to kill me, to trying to kill me himself. Paarthunax is yelling at me to use Dragonrend, but in about 2 minutes I'm halfway back down the mountain!
I can hear the dragons flying and shouting overhead and although every pratical bone in my body is dragging me away, that frustrating sense of heroic obligation forces my feet back up the hill.
I quietly mouth the words of Dragonrend in preparation and I sincerely hope that all it does is force Alduin to land, otherwise I won't be able to use it and this could be quite anti-climactic.
Fortunately it does indeed simply force Alduin to land, which means I can keep him on the ground while Paathunax does all the serious injury. I conjure my atronach as an added distraction, and really it's all I can do to just keep alive. I keep my magic armour on to protect myself from the burning rocks that are falling from the sky and use a ward to keep back Alduin's fiery breath. Every time he catches me with my ward down I have to throw back those health potions as fast as I can to avoid looking like my atronach... except, you know, dead!
Paartunax fights bravely, and when I'm not being roasted like a sweetroll it's actually an impressive spectacle. Two great beasts engaged in fierce battle, it actually makes me feel rather small. Alduin's too injured to fly now, and Paarthunax has his full attention, so I consider just sitting down in the snow to watch. Suddenly I'm enveloped in flames again! Paarthunax is slumped over, near defeated, and Alduin has turned his fire on me. I can be useful again! I ready my healing spell and restore my scaly sidekick (okay maybe I'm the sidekick) to full strength while he beats Alduin to within a scale of is life.
Like every great villain, Alduin waits until he is right on the brink of defeat and then departs with an eloquent speech about fighting another day. Not before he's forced to bow to me though. Oh yeah, dragon slayer standing right here!
I suppose I owe Parthy a little bit of credit.