On the Puma course, early stages, we used to teach a simple “70/30” approach to a landing in the event of an engine malfunction (very rare on a Turmo engine due to no electronics, they had purely mechanical centrifugal engine governors). Having recovered the Nr and with the faulty engine secured, fly a relatively shallow, trimmed approach at 70 kts to a firm surface. At approx 100 feet agl flare the aircraft to about ten degrees nose up, aiming to touch down at about 30kts (translational lift burble point).
It saved a whole lot of faffing about with throttles. There’s no reason why it shouldn’t work on almost any helicopter...certainly I’ve used it twice on an A109 (engine chip light induced shutdowns with diversion to an airfield).