From the top of the titlis cable car, its about a 10-10min ascent with Skis and Skins. Start towards the cable car station, drop in to the left and enjoy. Make sure to go eastwards fast enough to get over the Wendenjoch (which is easy)
Dangers: the usual dangers of Skiing on a glacier and backcountry.
Two cables at the landing site, stay low and check it out beforehand. Avoid the wildlife protection areas (the nearest one is drawn in the location map. More info here: http://www.wildruhezonen.ch/wr400.php
Speedriding map Titlis, Grassen:
Location Data Titlis, Grassen
Titlis, Engelberg, NW
Good to know