Warwick: Most warwicks will be jungle for bonus exp to the lanes, easy counter? wards and skills like JITB or teemos shroom at level 6. For first blood most warwicks rush blue buff Shaco is the best counter for him but basically any stealth or stun will work. Wait until you know he's in blue buff WW does lose enough health from golem low level just dash in when he is about 1/2 and stun or if you shaco hit him and lead him into your JITB trap. Mid game wards always useful and cleanse for his ult or a stun as soon as ww uses ulti.Late Game: Be Prepared for a world of hurt from ww if he had a good mid and early game easiest to do is keep him locked in stuns and when he ults stun him some more! He should be teams main focus except if they have a healer ie. Sona or soraka

Vlad: Vlad is semi squishy early game. Late game his AP and Health feed into each other and he can become pretty tanky. I like harassing with him early since he has the transfusion ability.

Keep in mind that it has a high cooldown early game - if you're getting pushed back, wait for him to use it on a minion, and then rush in. His auto-attack, while ranged, is pretty weak.

His main fault is his sanguine pool. After use, it has a 20+ second cooldown and it just cost him 20% of his remaining health. If he uses it offensively, stay alive and then punish him. Ignite will also help reduce any healing that he tries to do.

Actually, ignite is a counter to many healers or support characters. Always good to have it in a lane. You can only use it once per fight though, so make it count!

Shaco: He's slippery as hell, but any character with a lengthy single-target stun (TF, Taric, Amumu, Sion) would do well to save it for when he pops into a teamfight. Make sure your team knows to focus him down as soon as they see him -- It won't take more than a second or two. Also, any champ with ranged AoE damage (Vlad, Corki, Cho'Gath, Lux) should pop it into any brush he's recently run through.

Counter to Udyr---
He is immune to ranged harass and slow working down, as his turtle will regen with each hit. It also shields him from incoming damage. The best way to counter him is with stuns. Stunned Udyr isn't stance dancing, and that is his strength. He is very vulnerable to a stun followed by high burst damage. If he can't activate turtle form, or attack to lifesteal, his survivability is cut in half. Also of note, turtle blocks *all* damage, including dots and ignite. Don't waste them on him unless he's already stunned. Stunlocked Udyr drops like a fly.

Akali:
With full offensive masteries & ignite, she becomes an unstoppable squishy killing machine at lvl6 (like 40secs after hitting lvl6)
The counter? BUY HP! An Akali will go for the lowest hp opponent, all the time, in every fight. Try not to stand out of the crowd having 2k hp at lvl18.

Laning:
If you're playing a squishy and she hits lvl6, don't think that your lanemate will save you from the kamasofdoomz, because she just ults to you, shrouds, ignites, goes mark+hit+crescent+ult+mark+hit and you're dead, and she can ult back to your front row creeps before your lanemate can say wtf.
Don't think that you're safe chilling behind your caster minions with 70%hp as Sqishyplank; she will eat you alive.

Teamfights:
The way she rolls is "I'll just wait stealthed in the middle of a teamfight until someone gets fairly low (or there's a Veigar with 1800hp) and I'll unleash the kamasofdoomz on him; rinserepeat."
BUY GOD**** ORACLES, as they shut her down hard. Your tank should get them, as Akali barely scratches tanks.

So:
A bit of MR, lots of HP, and Akali won't even think of attacking you, and even if she does, her damage will tickle.
If she got a couple of kills early, get oracles, rape her.
Most people do NOT get oracles vs Akali, which is a huge mistake when she's running around with 20 Mejai stacks.
Still, if you're running a tanky team, you'll just laugh at a 20-stack Akali trying to do dmg.

tldr: go tanky.

Zilean:
Early game, play defensively unless your confident in your ability to counter-harass. Also, it sometimes helps to put someone with reliable heals in whatever lane he's at to negate his bomb harass.
Later on, he's tricky, but squishy, and easily destroyed by anyone with a good lockdown or distance closer. Veigar's stun+ult wrecks his face, same goes for Master Yi's Q+R. Poppy's charge+ult would probably work too in team fights.
Remember, he's a caster who relies on hit'n'run bursting and the presence of an ally to be most effective. Exploit those traits.
If he's doing well, get MR to make his bombs hurt less.


Tristana:
Early game, deny her farming as much as possible. Ganks, harass, whatever. Trist will absolutely demolish everything if she gets farmed up. However, without the right items, she's rendered incredibly ineffective.
She's very squishy throughout the game, but her Rocket Jump and Buster Shot make for powerful escape tools. A good combination of Stun/Burst abilities will deny her escape and make her go splat instantly.
Also, certain champions like Poppy and Olaf are great vs Trist. Poppy is the definition of anti-carry, while Olaf can slow and make himself immune to Buster Shot's knockback.
If she's doing well, get Thornmail for the massive armor and damage return.

Garen/Malphite, build EC as your first item in lane so his shield/health doesn't start to regen for an additional 8 seconds.

Rammus The scariest thing about Rammus is his ability to initiate with Powerball. This little move gives him the ability to roll up on your team's flank and rear while giving your tank or the finger. He then sits on the squishiest damage dealing member of your team while you lose the teamfight.

The first way to counter this is to always know where he is when his team is around. Have someone scour the side bushes, place some wards, and be very careful in his jungle.

The second way to counter this is to stop the powerball before it hits. your tank should fun directly into it or your team should send one stun, snare, or heavy slow and let him burn it out. If you stop his pb, then he won't be able to land his taunt as he likes while you rip up his team.

Malphite Much like Allistar, Malphite's greatest strength comes by running head on into your team while his team sweeps in around the sides. Flank his team and you will be fine.

Trundle His buff zone and ult buff last for six second each, kite him and pounce when they drop.

Give yourself plenty of directions to escape to. Instead of running directly to the back of his pillar, run sideways. Never try to run or fight near terrain obstacles, as these limit your escape directions, thus increasing the effectiveness of his pillar.

There's too many pages of this **** to read but I read through the entire OP and may I just say that most of it is completely wrong. Let me just use a single example of what was said about Udyr. Mekmaster has apparently tried to give advice about a hero he has never played against because he said udyr has no skills that help him stay alive. Um, ever hear or turtle stance, one of the most ownage survival skills in game, not to mention his MS buff and stun from bear stance? There were about 10-15 instances where I saw things like this in the OP that were just completely off. Like what was said about slowing yi. Does dude not even know what his R does...?

Just a note about mundo that helps a bit more than the tip put inplace

Try %health damage attacks still. Deathfire for example will hurt him a good bit.

also remember that his ult is regenerating. Throw an ignite/Executioners calling active/impure shot/grog soaked blade/other heal reducing thing on him, and he becomes much easier to drop. My team complained about how OP mundo's heal was, so i grabbed an EC and threw it on him midway into every team fight. he didnt survive many more skirmishes like he had before.