Buffy is the longest and hardest climb on the Northeast wall. There are two possible starts which make vary slightly in difficulty. Crux is definitely near the top where you follow an overhanging rounded arete and bust a mono to get over the bulge.
2 possible starts:
The actual route starts right of small and short finger size crack on the northeast wall. Follows up the rounded arete just right of alcove/drainage. If you want a slightly easier start then start in the crack unless that's just not your style.
6 bolts to chains