Platformers is my cup of tea anymore (sadly), but still think it's a great game!
I absolutely love the old school vibes, and it's runs smooth and feels good. Nice storyline, but a bit too easy imo.
A thing that annoyed my is that you talk to npc's with up-arrow. When i wanted to jump but i was close to an npc, the dialog started and i had to go through it to continue. For me, i think down-arrow or a specific "use/talk" button would be prefered.
Great music and sfx.
Good job and keep working on it