Originally Posted by
Tricosene
It took me some time to get used to Assassin's Trick, but now I use it a lot. Probably even when it doesn't help, just because it's become a twitch reaction for me.
When you use Assassin's trick, you'll see a blue glow around the enemy. It also alerts them to your presence, so the routine I use for undead and anything else immune to sneak attacks is Assissin's Trick followed by Shiv. I also have deception, so it helps when that goes off. Sometimes I also use it as a bluff - hit the mob with assassin's trick, it comes after me, then shiv-heartseeker-execute, and move on to the next victim.
It also confirms vulnerability to critical hits. I'm not sure about your assassin, but mine gets crits fairly often. So, for instance, if I have to pull out a thrower to deal with a skeleton archer on a ledge, I'll hit it with assassin's trick before attacking.
Try it out with your training dummy on your airship for practice.