In addition to the four sets of rogue talents, the assassin also gets their own tree with these four new talents. Each one is passive, so there’s nothing to activate in order to make them work. The first three all cause extra damage to the enemy, so they are very desirable.
Mark of Death
You can select a target as a ‘mark’ and this will allow everyone who hits him to do extra damage. This is great for taking out boss type characters or any enemy who poses the greatest threat. It has a 60 second cool down, so you won’t get to use it more than once or twice in a fight.
Exploit Weakness
With this talent, your rogue automatically does extra damage whenever they backstab. The bonus is based on your cunning score divided by three, so the average rogue would do at least another 6 or 7 points of backstab damage with this talent.
Lacerate
If you deal a powerful enough backstab, it will do additional damage over a period of four seconds. The damage is equal to 25% of the initial backstab amount. The effects are not stacking, however, so you can’t backstab them twice and have two four-second countdowns going at the same time.
Feast of the Fallen
This talent allows you to get a partial stamina boost whenever you finish off an enemy with a backstab attack. I’ve read online that it doesn’t seem to work all that well.