I don't have the specific grade for "Projekt" at Untere Lausbubenwand. Climbing grades can vary and are often debated amongst climbers. It's always best to consult a climbing guide or local climbers familiar with the area for the most accurate information.
However, generally speaking, routes in the Untere Lausbubenwand offer a range of difficulties. It's likely that "Projekt" is a challenging route, perhaps in the upper 6s or lower 7s (French scale), considering it's referred to as a 'Projekt,' which often implies a newer or more demanding line.
Climbing in Untere Lausbubenwand requires solid technique, good finger strength, and potentially some tricky sequences. Always take appropriate safety precautions, check the rock quality, and be aware of the potential for loose rock or vegetation. Enjoy the climb, and be sure to leave the area as you found it!