They walked along, Tai falling silent as Greyson explained how it was he aimed to get up the cliff. He accepted it, but he wondered how well that would actually work in practice. Still, the only way to find that out was to actually get there so he could put his skill in display. And fortunately for them that didn't take long. 

Priscilla and Greyson did just as they had said, using their weapons to boost their momentum against gravity and blast their way to the top. Meanwhile, Robert began climbing, made it a bit of the way up, and then decided that that would be a good time to ask him if he had a better way up the cliff. Tai almost rolled his eyes, getting a feeling that this lack of thought before action was going to be very typical of his partner. He'd have to keep a better eye out than before.

So he got to work, extending his weapons and swinging one of the heads around, faster and faster in a vertical arc until it had built up sufficient speed, at which point he threw it up, the head slamming into the mountainside and acting as an anchor. Tai then charged forward, slinging the other spiked ball ahead of him higher up, ripping the first out with chunks of rock as he fairly ran up the cliff. It was a process he repeated until he was at the top, at which point he stopped to get a few breaths before turning back and dropping his weapons down to Robert, the extended ball and chain, so he could grab on and be pulled up.