which asassins are glass canons?

Lets say you go jungle so you dont need any items you need for solo lane or so, which assasins should be build pure glass canons (no lifesteal or defense) and which should be built witch some def like witchs stone or voidblade or with something like souleater or blodforge?

Loki is full on glass canon IMO (due to his Vanish and Assassinate)
Ne Zha can be built glass canon as well, but I like going either Asi or Bloodforge just because the aoe attack gives you so much lifesteal.
Mercury should be built with lifesteal Bloodforge is my preferred choice, but Qin's Sais are decent as well.
Fenrir should be built with at least either focused voidblade or Sovereignty and Bulwark of Hope (but Jotunn's Wrath and Heartseeker or Warrior Tabi is your first priority).
Thor is penetration and Bulwark of Hope plus Sovereignty if focused voidblade isn't enough.
Arachne is kind of awkward, because she falls of so hard. So all you really can do is build early damage then hope to win before she is useless, she needs some defense late game if you want to be able to do anything though.
Freya damage and Polynomicon + Bancroft's Talon.

I'll leave the rest for someone else :P

Bakasura, close your eyes and pick items, you'll still be okay.

Bakasura is early game attack speed and late game on hit effect items :P

Thanatos is a glass canon. Qin's Sais is a solid pick tho, not necessarily for it's life steal.

arachnee can be great tank in arena:-)
- great cc possibilities, but I never build her as glass cannon. At least in arena because its not working