It has the elements I can expect from a Metroidvania: the map, the rooms, the minimap, unlockables
Music also is great and the game feel in general is good.
Minor observations would be: I would like to see some feedback when hiting the orange dudes because at the begining I though the hitbox was a bit off. Also, when you obtain an item or upgrade, the Update method is not paused for the rest of the game, so you can be hurt by enemies.
A part of that, good job, I love it and I'm sure this is one of the best entries!