@gullibell,
immediate action, except for an double engine failure, where the collective needs to be pushed down, is a good approach to desaster in a twin.
Any engine indication, establish OEI flight condition, continue FLYING the aircraft, which might include a turn away from hostile areas - and then deal with the problem.
F u c k binning an engine, that can be replaced.
But crashing the whole aircraft due to immediate actions without proper analysing costs a lot more, possible your life.
After a couple of hours with a good sim-instructor and a few avoidable crashes you might understand, why that is the way to go...