I had a total of 17 engine failures.
In about 1/3 there were clear signs, such as chip lights, bad noises or failing power (increasing N1 and TGT for the same power).
About 1/3 were part of a stall sequence, with rapid temp climbing, noises and then flameout (or I pulled the lever back).
About 1/3 were just plain failures, with the power sliding back rapidly.