erm... yes Kassa is a squishy character, if you for armor/HP too much then your dmg is as low as sh!t. I always had good stat with kassadin, until i sold him.

Really squishy build. I'm afraid that kass isn't much of a glass cannon. He can probably get 2 hits in before dying, and that won't be a lot of damage. Since his ult forces you to step into the front lines to do anything as well as having a short range. Kass will get melted by the other team's dps with his measly 1.9k health and 70-80 something armor. instead of a lich bane i would recommend an early rod of ages, or a mid game rylai's crystal scepter.

LOL
my first build was that , and then ShrubNinja said to change items... ofuc*

Levithan isnt a good item buy lich bane instead and a archangel staff

Okay! I changed a lot of items, and runes!

If you want to get a defensive item i Prefer "Leviathan". I'm gonna change the runes. You need Mana Regen only in early game, because you almost never get out off mana Mid/Late game.

My biggest problem with this build is that it's very squishy, from start to finish. With no defensive items, Kassadin gets killed almost immediately in teamfights. A dead damage dealer does no damage at all, as they say.

Your runes need to be switched around a lot. I would make all of your marks into the magic penetration marks, which are much stronger than they magic penetration glyphs, and your glyphs into a full set of ability power, which are much better than the ability power marks. Mana regeneration on the seals will probably help a whole lot too.

Gunna hold off on voting for a little bit until I try it out, but I'm positive this build could benefit a lot from the defensive item mid game.