Watch the Numbing Bends online guitar lesson by Tony Smotherman from Essentials: Power Ballad Soloing
Hard vibrato and bending is key in the intro to set the pace. Once the pace is set, it's important to not lay back too much as it'll make the feel of the solo overall drop in dynamics.
It's important to play with conviction when playing the chromatic notes in the walk up, being sure to emphasis them with vibrato. The triplet octaves at the end create a really great crescendo to finalize the solo.