-BE PREPARED FOR A WALL OF TEXT-
Hello, first guide I've ever writen, just giving my advice about cho'gath. I'm pretty succesful with him, getting around 4.5k health midgame and steamrolling the enemy if I get a great start.
Cho'gath shines in the beggining/mid game, and can be a nightmare to the enemy if he gets a great start. He is best used to solo the middle. I'm going to assume you have played cho'gath before, and know the basics.
Rupture- You will use this often, great for harrasing! You must master rupture to be succesful. Best used to poke(and this poke hurts) at your enemy at the beggining, less useful on minions, unless theres a big group just asking for it. You can use this in combo with feral scream later on, and make use of it to get away/get up close to your enemy. Rupture+getting up next to that ashe in the beggining can really hurt her, and deadly with feast.
Feral Scream- More used to piss the enemy off more than anything else, execept the ocasional last damage if someones running away. Oh, dident I mention the silence? Yes, they can't use any skills =)
Vorpal spikes- Every time you attack, spikes come out in front of you and hurt things. Great for bringing down groups of mobs quickly(awesome farming)
Feast- Deadly. At the beggining, if you arent usually up close to an enemy, use it on a minion. 1hit kill, gives you health. Stacks 6 times, giving you about 550-750 health depending on your level. ALSO IT MAKES YOU HUGE! Great for killing any champians that come close to you, it does a ton of damage. Learn to love feast. It is not a sometimes skill, feel free to open up with it to bring that cocky nasus down.
Passive- Killing gives you health/mana back based on level. Killing minions is a good source of health, espescially at the beggining. You will learn to last hit multipul minions with vorpal spikes, young gath.
ect, get scream last. No, you WILL get scream last. Shut up.
Spikes help kill lots of minions quickly, and gets heals you up a very good amount. Early rupture levels also hurt your mana even more.
-Ruby/belt for warmogs
-Mercury treads(needs boots+cape)
Optional 3 suncapes or bloodthirster for the lifesteal and 2 firecapes (highly reccomend the bloodthirster)
You can get a natures force if your heart desires so.
The last slot is up to you, I use it for potions(buy one, use, repeat for others) and then get wards if they have annoying stealth, or mana pots.
Note that the suncape will give you more HP, and perhaps a bit more surviablity, but the lifesteal helps considerbly more considering you will be killing TONS of minions and will always be healing
Go get some cooldown or something, Doesnt really matter.
Again, up to you. Try to focus on being as hard to kill as possible.
Flash- To catch that guy with 5 health whos getting away, or to get away from a guy thats chasing you while you have 5 health.
Teleport- To teleport after you go home to buy stuff
Heal- If you are under level 12 and cannot get flash, heal can be useful in the beggining, and later on for your fail teamate who just reconnected.
Ghost- If you feel heal is for ******s.
You should start soloing the middle. If not, learn to queue dodge ashe and master yi.
Hit the minions, level up, harass with rupture. Rupture, rupture rupture. You will most likely be up against some type of ranged, usually ashe/sivir. Remember, the more you harrass the less last hits they get. Less gold for their carry, the more likely you are to win. Once you get level 6 & feast, keep using it on a minion until you have 6 stacks(or on enemy if they're usually at low health and you can get close to them). Once you have 2750 gold, teleport with B to buy your warmogs, then teleport back.
Mid- You should have almost 2x their health, and perhaps a level or 2 above them. They also are gimped due to not having much gold, and probably have cryed to their team to have you ganked. 4 people hit you and brought you down 10% while you went go get a drink and afk hitting a tower. At level 12-16 if you have not been shut down, you may want to consider ganking the enemys yi whos at the bottem trying to be cute with that triangle thing. Seriously, you are at your prime and if you had a decent start you should focus on running around harassing the enemy.
Late- You are going to rupture+scream then eat them, then run away to his 4 teammates. Stick with a partner, you are sure to be ganked. They should be gimped enough for your semi competent team to slowly bring them down! Also, they will usually run from your giantness that can eat half their health in an instant. Be prepared for ganks.
Well that concludes my guide =)
Q: Why did we lose even though I was level 18 while eveyone else was level 12 at max???1?
A: You had Yi on your team. Learn to queue dodge.