You're teaming up with a Hylian dude with a pot on his head to beat up a bunch of bokoblins (who have a bunch of weird ass horns), possibly with a stick with a rock stuck on it.
The art direction, in general. The constructs with their various parts connected only by green energy. The creature, which, I think, is the one featured in the mural, that looks like a cross between a cat and a goat or something idk. Link and Zelda adopting a vaguely antiquity era look. Link, of course, having his arm corrupted or possessed or something, because why not at this point.
The idea of jumping into blobs of water in the air, racing into a tornado with a baby bird, diving miles deep in a laser tunnel in a wing suit, attaching a godamn rocket to your arm...
What's not weird, especially compared to how grounded Breath of the Wild was for a Zelda game. This is Mario levels of weird.