Some of the ones at lower elevations are just moderate to difficult hikes that we did with normal hiking shoes.
The moderate ones require some Class 2/Class 3 scrambling so we use hiking boots, helmets and poles.
We had ropes and crampons ready for Temple because of the snow and exposure at the top, but didn't need them (two weeks before we climbed it two climbers were struck by lightning but survived, and about a month after a climber fell to his death so the exposure is real).
Lefroy and Victoria are the most technical and difficult to access so we hired guides to assist. Used fixed ropes on the difficult parts near the summit. I had no chance to do these without guides. I'm not experienced enough.
The hardest part for me was overcoming the fact that I'm terrified of heights. Absolutely terrified.