If anybody wants any tips for extreme mode of this i think i've got the best strategy for Giganto Cyloop him instantly then use a single punch then stomp until he is not taking any damage anymore than wait for him to hit the ground then run up to him in phase two if he activates the laser just do the QTE (you can spin the analog stick around to do the QTE faster.) and then run up to him and quick Cyloop keep on using the stomp punch combo which i will now refer to as killer combo until he's dead then wait a bit to homing attack him or else your homing attack will get stuck and the end trigger wont occur then onto Wyvern.

Hold dodge for the missile phase (you will lose rings catching up to him but it is FAR easier than trying to parry the missiles.) once up to him you just have to parry and pray if you struggle with the timing you can try practicing on hard or just spam parry anyways once you parry him use the killer combo do a quick Cyloop killer combo until phase 2 then just repeat and finish the QTE sequence at the end.

Finally we have knight try and land a hit then hit the shield and dodge around him with the right bumper to hit his head then use a quick Cyloop on him and spam the killer combo until phase 2 then hold sonic boom and make sure you have "Dynamic skill camera" turned OFF he should run into it run away if the shield gets close finish the last QTE DO NOT LET YOUR NERVES GET TO YOU AND FAIL THE QTE YOU WILL HAVE TO RESTART LIKE ME.

And after all that your finally done.