I unfortunately have not played the game Inside is based on, Sayonara Wild Hearts, but this level has some of the best design balance and structuring in any extreme demon. Every part has one or more specific structuring ideas that are kept throughout the part (namely the web of sawblades around 0:15 and the robot at 1:18), which makes every part feel memorable and gives each of them a defining characteristic. All of the designs highlight and expand upon this structuring, like the angular, jagged highlights used in some of the structures around 0:54 and the circular pulsing structures at 1:45. This both provides good balance between the base and highlight colours used in every part's designs, while also just being generally visually pleasing because everything appears to "fit" together nicely within and outside of the blocks.

I do wish there was a stronger sense of progression, as aside from the backgrounds consistently having a similar sense of depth throughout the drop parts, not much ties them together. I'd have loved to see more tangible elements within the level like the structuring or designs be used to tie together elements of the song that only appear in either the intense or calm parts, or possibly more colour/pulse work to achieve the same goal. Additionally, while the gameplay is generally quite fun and well-balanced, some parts have very awkward timings created by the unconventional structuring that become choke points, especially the really tight robot click in the first part. These aren't deal-breakers, but I'd like to see Hypno improve and expand upon the style he chose for this level going forward, as what's here has potential to really be something special. I'd personally recommend this for Epic because of this.