The paths from the 3 Towers Path are easy to see and can be hiked. It is a bit up and down, but the degree of difficulty is between easy and medium. Good shoes would be advisable. The prospects are really very nice.
On the 3TürmeWeg Hagen you can get a stamp and then get a certificate at the Tourist Info in Hagen. When the towers or other places to stop for refreshments are closed, a photo is enough and the stamp will then be added.