I've had a long-standing rule to avoid getting involved in any sort of crowdfunded activities. I didn't donate to Shadowrun or Wasteland, but I did buy and enjoy both of them (I'm plugging both of those games right now, just so you know they're good). I haven't...
There's no distinct crest marker, so you just need to aim at the top of the helm.
Don't waste boosts just because you've got them. They don't disappear.
Upgrade your armour whenever you can, for things get tough pretty fast.