Start out on the convenient and possibly crowded Handies Peak trail that fords the Lake Fork of the Gunnison River on a sturdy bridge. Hike WSW up the trail toward Handies through fairly open forest. About one mile up the trail at an elevation of 11,125 ft., look across Grizzly Gulch to see the three parallel avalanche gullies that descend off Pt. 12,792. Find a way to cross the stream and head up the third (westernmost) gully. You can avoid most willows by clinging to one side or the other of the chute. We utilized mostly the left side where we found numerous game trails. The ascent here is steep but on good footing all the way. Half way up, the gully constricts and then widens back out. At 12,000 ft., you leave the trees behind and walk on open tundra slopes filled with a profusion of July wildflowers. Tag the Pt.12,792 and continue hiking on less steep terrain to Pt. 13,502 over mostly tundra with one short rocky section below that next point.
From Pt. 13,502 follow SSW along the ridge, losing some elevation to a saddle below UN13,801. Head off the saddle to the left and take a contouring descent into the head of Campbell Creek, dropping no lower than 12,800 ft. Re-ascend to the west ridge of UN13,454 (Campbell Creek Peak) gaining the ridge at a saddle about 1/2 mile west of the summit but well east of a rocky section of the connecting ridge between UN13,454 and UN13,801. You may find a game trail leading to this saddle. In early to mid season, there may be snowfields to cross. Once on the ridge, follow it ENE the last half mile as it slowly gains to the summit of UN13,454 over a mix of tundra and rock. There's nothing particularly scenic about this rock and tundra summit itself, but it offers a great view looking back down the Lake Fork Valley and surprisingly of the Grenadier Mountains. The drop off into Cottonwood Creek over 3,500 feet below to the south is very impressive.
For the return to base, retrace your route back over to the Pt.13,502, unless you are going to include UN13,801 in your plans for the day. If you do, the only real problem will be a short stretch of broken rocks and cliffs about mid way on the connecting ridge between the two summits. There is one deep gash in that section. From UN13,801, you may either descend as you came from Grizzly Creek or see the descent description for UN13,801 for a quick alternate that may save some time and take you by an unusually colored lake.
Links to other information, routes & trip reports for this peak that may be helpful.