From Engelberg, head towards Eugenisee and then wind through houses on the edge of town before starting the ascent to Ober Zingel. You'll have great views of the valley, and steep climbing. At Ober Zingel you can stop for a snack, or continue upwards to Lutersee. From here, you'll continue hiking upwards along steep mountainsides and grassy ridgelines, watch your step! When you reach the pass, enjoy views of Engelberg and the surrounding mountains. It's a steep path down from here into the valley. Follow signs for Untertrübsee (it's probably worth a stop for some delicious food). From here, it's a quick trail back towards town and apres at Ski Lodge.