Watch the Hammers & Pulloffs: Level 2 online guitar lesson by Chris Buono from Guitar Gym: Hammers and Pull-Off Workouts
Completing the Level 2 Hammer-on & Pull-off Workouts you'll be playing another 4-note chromatically based pattern that calls for legato this time with a new pattern (4312) and a new position (1st position). Starting with a half step pull-off from your fret hand 4th finger to 3rd finger, you'll then play another whole step pull-off to the 1st finger that should be sitting on the 3rd fret. From there you just need to plant down a half step hammer-on with your 2nd finger. Be sure not to get thrown off by the physiological make-up of your hand where your fret hand 2nd, 3rd and 4th fingers share resources.