In reply to JJEkland:
Hello
We are talking Besseggen in the Jotunheim right?
If so the ridge it self is a scramble. It gets a bit of a scary write up in many Norwegian guides as so many people with no experince do it in the summer. In May the chances are it will be snow free as it gets the sun, althought its not unheard of snow falling at anytime in the Jotunheim. The biggest problem will be access as the ice over Gjende can be in a poor state that time of year. Alternatively go along the lake edge to Memurubu Turisthytte (The hut often closed in May).
Snow on the ridge shouldnt be a problem, access over Gjende lake will almsot certainly be the biggest challange.