Teenage Mutant Ninja Turtles: Splintered Fate - Casey Jones & the Junkyard Jam Review (Turrim)
The Casey DLC is worth it because not only it unlocks Casey which is a very fun character on its own, but it also unlocks the associated Casey Perks/Masteries/Inspirations in the general item pool for other characters. Additionally you will also unlock the option to go to the Junkyard as the mid-section area rather than having to go to the Streets which is great for keeping your runs fresh both visually and mechanically since you also have new bosses on that area.
Hopefully we will see more updates and content/DLC coming in the future with new optional areas to substitute the first and third acts and also new characters options to play such as April, Splinter, Slash and others, plus it would be also interesting to get skins as unlocks from the different version of the turtles (classic, comics, 2003, etc).