Maybe the best Arkham DLC ever? That will be a debate for another time, but i think for what it is these are four genuinely compelling additional side quests that work really well alongside the rest of the game, feeling more like an addition to the main game than a separate piece. Mad Hatter is always fun because they tend to do very well with him stylistically, and this is no different as his level is short but very visually entertaining. Ra's al Ghul's side quest presents the player with an interesting choice that I think is more complex than right or wrong, especially considering Batman's no killing rule. Killer Croc is done quite well though I felt considering how they teased him in City, and how genuinely nerve-wracking his level is in Asylum, it could have been a bit more personal. Mr. Freeze's level is fantastic, mostly for the great story that continues the interesting sympathetic route that the other games portrayed him in, and tied his thread up in a very satisfying way. Sometimes nice endings are just nice. That said, this isn't essential or anything, none of these side quests reach Zsasz or Pyg levels of great, but they're a lot of fun to do and all entertaining looks into the Arkham world.