Don't waste your time on Transistor. It's a less interesting story, world and game.
Less options for customisation and attacks, little to no mobility, and you pretty much have to play it like a strategy game - only after your "turn" is up, you have to run back to cover and wait for a new turn.
I didn't finish playing but I don't remember any extra challenges, either. Nothing like the dream fights or invoking the gods, at least.
Bastion was already pretty light-on, so I don't understand why they'd try to follow it up with something with even less to do.
Fuck Zulf. I should've left that nigger to die after the shit he pulled.