I always get amazed by cool intros and animations, it immediately hooks me, wow. The jittery background is so so cool. I think the game has a lot of potential, especially with more content.
The visuals are epic (the floating lights, the background holy shit),and the audio is amazing. It took me a while to figure out I can double tap into running faster, but everything was very intuitive. I even think some extra keys worked (like z instead of e?) The extra polish is great.