Head forward and smush the guards (that's a word, right?). You can even hit some guards as you stare at them from the foreground. Continue on to fight a giant guardian, then head onward. Continue on destroying the small things until you have to jump down and fight two giant guardians (a Shockwave helps here). Further in you will see two of those ring objects. We actually have to kill them here, so do so (one air attack) and the door to the north will open up for us.
Carry on to the north and defeat the giant guardian you find. Behind him some platforms will start up: use them to get up higher and head to the left. Jump the gap you find (it is safest when the right brick heads left) and up next is a super narrow platform with a blade going across. Get on and jump over the blade when it comes at you. Further on will be two giant relic enemies. Remember the smaller ones from earlier? These ones charge you in the same way, so dodge and hit back.
Continue on and jump over another moving gap, then make your way up the slope with blades on it. At the top are three more relic enemies (use a Blast here if you can afford it). Carry on through the gate and watch the scene. Head forward past the moving platform and kill the three relic enemies, then the two rings past that. Head down to the ground now and kill two giant guardians so open the door to the north.
Squash the enemies you wish to here and head down the path to fight two more giant guardians. You'll see a scene afterwards leading to the next part of this chapter.