Dusk is a beautiful balance of modern fps and classic shooters, probably the first classic game that comes to mind is Redneck Rampage or Doom. While Dusk has many references to the classics even like Half Life and Quake it manages to create a whole new atmosphere of absurd fun and is constantly feeling rewarding to the player through high amount of mobility and high responsiveness.
There are many aspects to Dusk that make it very special to me one being the soundtrack; the soundtrack was produces by Andrew Hulshult, If you've been in the fps genre you'll most likely know who he is. The soundtrack in episode 1 starts out with more synth based notes that slowly progress into darker industrial metal upon reaching episode 2. The music is not only super fast paced bust very well composed when beats are not present. The ambient soundscapes achieve their goal extremely well when putting the player into the setting of fear, suspicion or even malice.
Even though I finished the game a while ago I find my self constantly revisiting the game, because I'm never really felt dissatisfied with the gameplay. In conclusion I truly believe that Dusk is a great throwback for classic gamers or even new gamer who are looking to get into the classic fps genre.