Hey guys, Sh3n0 here. This is my first guide and I really haven't been playing League for too long, so bear with me. (I'll try and make it pretty so it isn't a text wall. (eventually)) Leave some comments if you guys want me to add something. <3
If you make a comment about the build and I see it, I'll try to respond! I'd like it if I could get some advice on making this guide better. Thanks for your time! :)
I'm going to make one of those posts that you see every once in awhile with that pretty little picture that tells you not to over extend. Not to be mean, but you need to know it if you don't. Please don't down-vote before trying out the build!
Feel free to reuse my picture. It sucks but if it fits and you don't care, you might as well.
Table of Contents:
I - Introduction
II - Evolutions
III - Runes
IV - Summoner Spells
V - Items
VI - Pretty Picture <3
VII - There's no Team in Teemo
VIII- Pros/Cons
XI - Glass-Cannon Build
XII - Jungling!
XIII - Summary
XIV - Voting

There are many DIFFERENT ways you can evolve. I personally prefer to start with my E, while some prefer their W.
Mine:
EQW
Other (less useful IMO) Ones:
EQR
EWR
WEQ
WER
Note: The reason I don't get my ulti is because the stealth only lasts one second, that's one second for a bit of defense but less damage and healing. (3 seconds, total)

Theses runes are pretty common. You could/i] switch out the Flat MR glyphs for Flat AD glyphs. The current runes are set up for high AD and good armor/MR for early game.

Summoner Spells!
The summoner spells I usually use are Flash/ Exhaust.
There are a few other good replacements.
Ghost instead of Flash
Ignite instead of Exhaust
I've seen people run Exhaust/ Ignite, but I haven't tried it. Do it if it suits you.
BarrierBarrier instead of Flash Flash (Customs <3)

B3 - Do I need to explain this one?
HoG - Buy one if you're getting out farmed (GP10 and Health OP)
Zerker's - You could also take up Merc's or Tabi, depending on preference/composition.
Wriggles - Nice early game damage, armor, and a free ward!
Phage - Health and damage that you'll probably need for top lane, with an occasional slow!
Bloodthirster - Great item for the AD, you'll definitely need one.
Phantom Dancer - why do I get this? That bit of sustain damage really helps, TBH.
Frozen Mallet - Why WOULDN'T you get a Frozen Mallet? OP slow with some health. <3
Guardian Angel - Free life? Yes, please!
Bloodthirster - More damage, extremely useful. (Or a Last Whisper)

Path I take to Red
Wards (The one at red only if you plan on taking it)
Caution Warding - Place wards there if they have a teleport, or if you want to be cautious.
Safe. <3
Careful, bro.
DUDE, BACK THE F*** UP!
http://www.ltcstudentweb.com/joshuaperkins/maps.html

Need music yet?
Listen to it, it's good! <3 Play Video Ballerauille

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Getting max stacks on your Bloodthirster is extremely important. That 80 AD can mean the difference between winning or losing a teamfight. Always try and keep your stacks up, unless it'll cause your team to lose. (Teamfight, Baron, towers, etc.)

Work with your team! Jump in from behind and destroy that ADC! Your team will almost always win team fights once you smash the ADC that's chillin' in the back. If the ADC is far enough away from his team, he's gone.

My friend tried it and told me he did good, but I have yet to try it. With the new Riven skin I've been playing her a lot more recently. It is up to you whether or not you try it, but it can't be too bad if you're going for burst. At full stacks you'd have almost if not more than 600 AD.
600 AD HURTS

I honestly don't jungle much as Kha'Zix, mainly because I prefer Amumu/Udyr. Please comment about jungling Kha'Zix if you're good at it! :P

The build is what I use, Warmog's, Atma's, Frozen, GA, BT, Boots...they're all good items together. You could build more bursty, but if you drop the Warmog's I'd also drop the Atma's.
Good luck jungling, and don't forget to use your Wriggle's while you have it!

Please don't down-vote before trying out the build! This build should give you tons of burst with some sustained damage. The ADC/APC won't know what hit 'em. >>>The reason you shouldn't get an IE is because his Q can't crit. The only reason to get an IE is in the burst/sustain build where he has ASPD and CRIT from the Phantom Dancers.<<< Your stacks on your BT's, get them.

One last thing to ask of you guys, don't vote by simple assumption. Please play multiple games with the build and comment before voting. Hopefully your comments can make this guide and the readers better! For anyone who upvotes or downvotes and >COMMENTS<, I thank you.
Sheno.