As a sequel to 2016's Hitman this game doesn't do anything extraordinary or different, but it doesn't have to. It does everything right what its predecessor does, and that is fine - of course a few game mechanics were improved and the game itself looks better - but in total it feels like a greater DLC to Hitman 2016.
To the game itself, it provides 6 maps, 8 with DLC, with several missions for almost every map. The "story" is mostly mediated through cutscenes, but it's not important anyways. What's important is the Gameplay, which makes this game so special. There are multiple ways to finish a mission - in which you have to kill multiple targets, as you maybe read out from the title of the game - the possibilities are endless. There are brutal kills, goofy kills, melee kills, accidents, explosions, guns and a lot more. A core game mechanic are also disguises, which you can use to access different areas on the maps. You can either finish the entire game in 5 hours or you could figure out multiple ways to play a mission and easily end up with 200 hours - I myself have over 800 - it's up to you how long you spend with this game. I would only recommend it to people who like to explore games very intensively and don't rush too much. For me it's one of my favorite games since you have nearly endless possibilities and therefore endless fun - the feeling when a long thought out plan to kill a target works out perfectly is indescribable.
All in all I had to give this game a 10/10 for reasons I described above.
Have fun and good luck, 47.