At first you're like this is a spin on Zelda 1, it has the same mystery feel to it, it has a little Dark Souls, the difficulty, the slow fight animations, the fires and the way you discover the lore.
That constant mystery, knowing it's not hollow, there's actually something to discover, understand is just a drug.
When you discover the holy cross, Tunic shows what it's truly about.
I even decrypted the tunic alphabet, I'm just missing two vowels, just reading the manual become a task, your brain is constantly working so it gets a little tiresome, but that feel when you try to read a secret, don't know a character so you just go read some lore to try and find it is thrilling. You're just there with tens of pieces of paper of notes with arrows, lines, characters, it's crazy.

I had to look online for barely 5 secrets but it doesn't take out much of the joy.

I love the eyes the far shore.

I had to take a pause cause of life while playing the game, I had most treasures and just needed to find the golden path at that point, if I could've finished it at that time, I'm sure I would've had more to say.

(If you like this game watch the movie Trenque Lauquen, the same sort of getting high on mystery)