Charmander said:
Yes, they can be defended against with stealth, maybe not if you're standing in front, but if you're smart they can. You don't shoot the Marine in the face if he's set up overwatch. You move around and shoot him in the back of the head, hide, and move again. You stay out of his kill zones, and with the rifle you can stay out of range as well. It's going to be a debate as to whether or not firing that rifle would break concealment- I'd imagine it would be at least as quiet as the stalker bolter but they didn't really flesh out the rules much in the book where it's described, so it's up to again, the GM. But if you fire a weapon that has no chance to be detected, the only way you're going to be able to pinpoint the shooter is by looking at the injury that you just got. If the Vindicare is smart, he'll be displacing like a mad man and hitting the team from all kinds of angles, and using specialty ammo which means he can probably take out a couple of marines with single shots. And if you read the rules that no matter what shooting breaks concealment, then the Vindicare should be smart and shoot from cover, which means even whin the KT does hit him he will get another 16+ points of armor to help him soak.
Sure, that works. But now you have moved far away from the example of "lone vindicare charges into killteam and kills them all with a knife", which I is what I was answering to.
Charmander said:
If he's going in with a knife, again, you come up out of the kill zone, out of the line of sight of the marines, and hit them with a surprise action where they get no reaction and no counter move.
Between five marines and Overwatch, there isn't a single point that's "out of the line of sight" and yet allows you to charge them.
After the first time you do this you also enter combat time, so no more suprise rounds, and still overlapping fields of overwatch.
(Still, please don't let us argue about well played vindicare using his abilities to the max vs. well played Kill Team using their abilities to the max. There are too many factors and I really just wanted to answer that 'lone berserker vindicare with a knife' scenario. I definitely think the Temple Assassin / vindicare is overpowered, I just thought that specifc scenario was a bit too hyperbolic)
Also, while you can't dodge/parry during when surprised, you still get reactions (though possibly only outside that surprise round, which only happens once anyway). Fire fo Effect for example seems to be specifically aimed at allowing you to shoot people trying that surprise tactic on you. Sword and Shield and Counter-Charge also don't seem to care whether you saw the attack/charge coming.