It was a pretty good finale, but had some disappointing aspects just like the main anime.
The best part of the entire episode was definitely the DR 2 characters getting back to action once again. They're just so fun to watch, as always. I loved seeing the DR 2 cast interact with the DR 1 cast, in a less serious atmosphere this time around.
The animation and sound were about the same from the DR 3 series, and it's really fun seeing DR 2 characters in the Future arc setting. The soundtracks were good but I was a bit disappointed some of the osts from the games weren't used, especially the intro theme.
You know what, although there were a bit more issues with the anime than what I would've liked, just seeing the DR 2 cast back again and interact with the DR 1 cast made this episode great for me, even if "SPOILER" I didn't really like Kyouko being alive again. Thought it would've made much more impact at the end if she stayed dead. It kinda feels like Kodaka pulled out at the last second, and it somewhat made the NG codes and Bandai's death look cheap. But I'm sure some of her fans are happy.
It's a short, yet packed finale. The anime indeed made some questionable decisions throughout, but nonetheless managed to wrap up many things from both the games and the rest of the DR 3 anime nicely.
Finally, I thank you, Kodaka, and every other staff involved with the series, for bringing us the Danganronpa series to our home.
