I'm pretty sure Zeno is pronounced with a short e, it's short for Zenozoik and we hear that said in the game a few times.
Kicks are mostly used to kick people when they're down or deal with wildlife. You also kick when you parry an attack and counter though that's more of a roundhouse kick.
Melee weapons are fairly clunky, they're really powerful but after you take damage there's a few seconds before you can start a swing with the weapon and there's no visual indication of that, leaving you feeling like Ghat doesn't obey your inputs. They're also really damn slow.
I agree the lock-on is unnecessary, it's not like someone right in front of you is hard to hit with manual aim. All it does is get in the way when you want to grab an object on the ground in the middle of a brawl. Well, okay, it's a way of letting you holster your weapon to avoid having it knocked away but I'd rather have a holster button for that since it often gets knocked away the moment I lose the lock on a target and Ghat pulls the weapon out again even if there's another enemy right next to you.
Also I'm not sure what's supposed to be confusing about the ending. Yeah, we don't know much about Golem but that's not really a direct part of the main story about the family.