First off, Alduin at the final fight is exactly the same as the very first dragon you fight, only this time you're MUCH more powerful than back then, and you have 3 immortal NPC heroes kicking Alduin's [censored] instead of a few easily one-shotted guards. Second, Alduin doesn't get any special attacks or awesome WMD except for the lame meteor shower which does tiny damage to me, and the poor guy can just easily stunlocked by impact, and can be kept on the ground by Dragonrend.
After beating him like beating a child (and when he cries while dying, I actually felt sad for him - I felt the fight completely unfair to him), the 4 dudes then came and cheered on me (which I find actually insulting because the three heroes' cheering voices were so emotionless and were so out of sync from each other). Then the big guy more or less just urged me back to Nirn because I'm not supposed to be in heaven.
After sent back to the Throat of the World, darn it was so sad. The ingame time was 3 AM, the dragons were mourning over Alduin's demise, and one by one flew away, even Paarthurnax sounded sad, and after a short speech, he flew away too...left me alone, in the blizzard, in the snow, in the fog, in the night...so lonely...so cold...so dark...
...it was then, a single dragon flew over, and landed next to me - Odahviing! Then he talked to me a bit, and then said he'll become my ally, and I may call him anytime...he's literary the only friend in a cold dark night!
Besides him and Arngeir, ALL the other npcs just don't acknowledge me at all, the first thing the first guard I met said was complaining that I released a dragon away, Nazeem still mock me of not getting in the cloud district often even though I fricking saved his city and captured a dragon there, the Whiterun Jarl and his biatch doesn't ask me "hey how did you go!?" even though I just flew away on a dragon's back to save the world 10 ingame hours ago, and worst is Delphine after a short thank you she then continues to bug me to kill Paarthurnax.
Seriously, I've never felt so lonely after beating the main quest in an RPG, it's like everything I did was for nothing.

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