I reviewed the original Darkside Detective back in 2017 (https://www.gamesfreezer.co.uk/2017/10/review-darkside-detective-welcome-to.html) and found it a really fun and funny experience.
This sequel continues in very much the same vein, if you were a fan of the original, this is a smooth and high-quality continuation but the way in which the story begins and progresses, you’d need to be aware of the events of the first game to really understand what’s going on and get full enjoyment out of the experience.