There's so much padding in that game, it's a pure joke. The 'huge open world' is just utterly pointless and only serves to needlesly inflate the amount of time you play the game by forcing you to run in a straight line on that damn horse for 10 minutes between every colossus. It's not even exploration, there's nothing to explore, you can't get lost or find something neat, the only exploration is literally finding the area where you fight the next colossus which is done by "go straight in X direction". It's the most linear open world game I've ever seen. I wouldn't mind if there were actually something else to do in that world, but there isn't, it literally just exists to add another 1 or 2 hours to the play time.
If there were a few little enemies to defeat it would be excusable. If there were some other climbing sections, fine. But there isn't, your default attack is literally never even used. There's only about 4 places in the game you even climb (discounting the colossus themselves). What's the point? 95% of the game is 'nothing happening'.
And the actual killing of the colossus? The only reason it's remotely challenging is because your character controls like utter ****. That boy has no sense of balance or sense or urgency. I understand that you'll get knocked around or have to hang on tight with the colossus's but damn, that boy would get knocked flying across the floor during a light breeze. Trying to stab the weak points of the colossus is one of the most irritating things I've ever sat through since you can get to the weak point with a full stamina meter and waste it all without ever stabbing the damn thing because the guy flails and stumbles around if the colossus so much as blinks, stopping you from ever being able to actually stab it. He also takes his sweet time to do anything.
Even with all that, every colossus took 5-10 minutes to kill, which is a joke considering they're literally the only part of this game that is a game.
The entire game isn't a fight against the colossus, it's a struggle against the awful controls, physics and mechanics that somehow get praised in that game. Even the damn horse is annoying. Want to stop moving? Nope, the horse won't do that, it wants to start waking backwards instead. Want to move forwards? Well, you're gonna have to spam X and kick the crap outta that horse before it even gets up to a light trot.
Hell, I even got annoyed at the options menu of all things! Why the hell are the camera and the aiming controls two separate things? Why is 'normal' for the camera controls actually 'inverted' but 'normal' for the aiming controls actually normal? I had to go into the options initially to change to 'inverted' on both since left was right and up was down. Why isn't it left is left by default anyway? Then I had go back to the options since I realized 'inverted' for the camera was different. I shouldn't have to go and change the options twice. It's a nitpick, but how friggin' stupid does a dev have to be to **** up such a simple thing like that?
If you removed the useless parts of the game (which is most of it) and improved the controls and mechanics, the game would be about 30 minutes long.
I'm glad that both you and the horse die in the end.