ADOMFAN wrote:I have "Gesture of Pain" and I'm sustaining it. The comment says something like "use this in place of your normal attack". When I'm sustaining Gesture of Pain, am I using it in place of my normal attack?
Yes, sustaining Gesture of Pain is all you need to do.
Next question: I'm using Mindstars. Is it worth getting the Mindstar skill in Zigur and putting some points in it?
If you're using Gesture of Pain, you won't benefit from the increased mindstar damage because Gestures override your basic melee attack. However, it still increases the stat bonuses on mindstars, and IIRC you can use the other talents in the mindstar tree. The limiting factor is going to be your generic points. Of the following, don't expect to be able to invest heavily in more than two: Racials, Cursed Aura, Gestures, Mindstar Mastery, Antimagic, Fungus.
Last question: Does Combat Accuracy help when using Mindstar?
It does, but because mindstar accuracy is based on Willpower, you most likely won't need more than a point or two at most. Gestures ignore defense entirely, so Combat Accuracy is unnecessary if you're using them.
I couldn't find any guides to Doomed, so any advice would be appreciated.

Don't bother with Shadows until your own attack talents are up to snuff, they're a useless hate drain until you can afford to dump a ton of points into the first three talents.