Attributes:
Critical Strikes 12
Shadow Arts 8
Marksmanship 10
Runes optional, although without Runes the Skills are still just as good. I advise not to use any Runes since loosing HP for a minor Attribute increase is pointless.
Skills/Build:
1. Optional (recommended Skills: Volley/Heart of Shadow/Disrupting Accuracy)
2. Keen Arrow
3. Critical Eye
4. Critical Agility
5. Critical Defense
6. Way of the Master
7. Way of Perfection
8. Way of the Assassin
This Build is probably as defensive as an Assassin can get, and still deal some decent damage. With so many Skills which increase you chance of Critical Strike you will deal on average 30-50 damage (if not more), and if you choose to bring Disrupting Accuracy you’ll interrupt most of your targets actions(very useful against Spiking Spell caster opponents). Way of Perfection will heal you for almost every attack you make and Critical Defense will keep most Warriors, Assassins, Dervishes, and Rangers of your back. Critical Agility is obviously for an Attack Speed buff and some minor Armor increase. Volley is to be used in low-level areas where there are many weak foes. Heart of Shadow is to be used if you don’t trust your monk(s). This builds obviously has no Resurrection Signet for the fact that, in my opinion, a Survivor has to be careful, and if you are careful you won’t have any need for such a Skill.
Another reason why this is such a good/decent Survivor build is that you attack at range so there is no need to be in the middle of the fighting, and dying.
SCYTHE VERSION
Attributes:
Critical Strikes 12
Shadow Arts 8
Scythe Mastery 10
Runes optional, although without Runes the Skills are still just as good. I advise not to use any Runes since losing HP for a minor Attribute increase is pointless.
Skills/Build:
1. Optional (recommended Skills:Victorious Sweep, Crippling Sweep, Farmer’s Scythe(for errr...well “farming"

2. Mystic Sweep
3. Eremite’s Sweep
4. Shadow Sanctuary
5. Critical Defense
6. Way of the Master
7. Way of Perfection
8. Way of the Assassin
Almost the same as the Bow version except it uses scythe Skills and deals way more damage(50-100 on average). Also since the Attack Skills all take a low amount of time to activate the need for an Attack Speed Increase is not necessary allowing us to use Shadow Sanctuary to it’s full potential. This version is, however, not as "safe" as the Bow Version since you have to get within melee range leaving you vunerable to AoE Skills and being body-blocked and killed.
Updates:
If I get any new ideas for other versions of this build I'll post them here.
(Note: Melee versions of this build won't be as useful for Survivor, but they might/might not be more damaging.)
Added: Scythe Version