wooooow, never played Doom but I really enjoyed this. I don't know if it was intentional or not but the instrumentation and the way you structured it reminds me of some of those dreamy Undertale tracks like Hopes and Dreams, maybe that's why I felt it close even though I've never listened to the originals ^ ^ also I really like how the track ends.
having listened to other amazing works from you I identify how different this is, and let me tell you that it sounds suuuuuuper good for a style you're not used to. I admire you for writing and creating something out of your comfort zone, it really shows how great you are as an artist.
keep creating beautiful things! :D