The Welsh 3000s Challenge (14 peaks Challenge)
It is rocky in places, and both descend and ascend are demanding. Navigation can also be problematic in bad poor visibility conditions. You can do the walk over 2 days using a fully equipped mountain hut.
The Welsh 3000s as challenge, walk or experience is second to none! Contact me if this interests you and I can arrange something which suits you.
http://mountaineeringjoe.co.uk/mountaineering/mountain-challenges/welsh-3000s-14-peaks-challenge-in-24-hours/