Things I liked:
*The Jenova music during the final confrontation with Kadaj.
*The mixed One Winged Angel music with the battle against Sephiroth.
*Reno and Rude as comedy relief. This was something that I am glad they explored more since it was somewhat subtle in the game.
*The great use of applying game rules to the movie (yes, the fighting scenes don't resemble the battle system, but this is kind of how I imagined the battles to be)
*Rude pulling out a set of spare shades after Reno accidently steps on them.
*The way Cloud beat Sephiroth. I WISHTHAT LIMIT WAS IN THE GAME.
*How everyone (including Aeris) worked hard as a team to launch Cloud up to Bahamut.
*This part of this conversation:
Cloud: I want to be forgiven.
Aeris: By Whom?
*Pretty much all the refrences to the actual game
There is only one thing I am confused about. I swear to god that Tsung died in the game. I mean that's why Elena was all pissed off at Cloud before he went to the Great Glacier, right?