I've decided to play DE since Human Revolution impressed me so much and wanted to complete the first two parts to complete the story before playing Mankind Divided, so this review reflects the point of view of a guy that played the game for the first time in 2018 after completing HR.
The graphics are still acceptable and are not painful to look at which is often the case with old 3D games, which is impressive given it's been 20 years. The story is intiriguing, though naive at many points, which will disappoint you if you expect something comparably complex to HR. I had also expected more open world and side quests. There are still some deep and immersive dialogs that really make you think about the future world that were the high points of HR.
The combat system is cool and character development seems to be thought-through, but the tasks are lengthy and get boring after a while. I had the feeling that the game is simply too long and repetitive - kill the guy, get the item. I've played the stealth way, which has probably took much more time than hacking through the enemies, but didn't feel being rewarded too much for that, except for being able to overhear a couple of additional dialogs that didn't add much to the story. Probably it used to be more fun at the time it was released as the game was revolutionary in terms of graphics, story and openness.
Despite losing its edge a little with time, the game is still enjoyable today and I recommend it to people that enjoyed the sequels as well as to all those that like dark sci-fi and fusion of RPG and action. It's also fairly easy (didn't spend most of my skill points until the last missions).