Teenage Mutant Ninja Turtles: Shredder's Revenge feels like the pinnacle of DotEmu's work so far, a colourful and joyous brawler that captured the spirit of Konami's arcade games, ladled on the fan-service, and was a co-op blast. Sure it relies heavily on nostalgia but, as Paul McCartney once sang, you'll be older too.
The game met with huge commercial as well as critical success, so the announcement of DLC always felt like an inevitability. The direction DotEmu's gone in, however, perfectly aligns with that strategy of giving the fans what they want: In this case, a popular Japanese comic character that has featured in various TMNT crossovers in the comics and animations.