I usually play Wukong as a DPS and gank when a lane needs it. Once you get your Ultimate Wukong can save many champions. Dash to them using Nimbus, throw a Crushing Blow then launch them in the air with Cyclone. When knocked in the air the enemy can not move or attack until they land again, buying some much needed time for your team.
Stone Skin (Passive) - Wukong's armor and magic resistance are increased by X for each nearby enemy champion.
Crushing Blow - Wukong's next attack, within 5 seconds, will deal additional physical damage and will reduce the enemy's armor by 30% for 3 seconds.
Decoy - becomes stealthed for 1.5 seconds and leaves an uncontrollable decoy that doesn't attack or move from the place he activated it. The decoy will deal magic damage to nearby enemies after 1.5 seconds.
Nimbus Strike - dashes on a cloud toward a target enemy and sends out images to attack up to 2 additional enemies near his target, dealing physical damage to each enemy struck. He also gains an attack speed bonus for 4 seconds after hitting a target with this skill.
Cyclone (Ultimate) - staff grows outward and he spins it around for up to 4 seconds, dealing damage every second and knocking up enemies once per cast. Wukong gains 5% movement speed bonus every half second for the duration of the spell, with the bonus disappearing once he stops spinning. Wukong cannot attack or use other abilities while Cyclone is on, but he can deactivate it at any time.
When playing Wukong I begin the game by purchasing Doran's Blade. After that I continue to lane until I can afford Phage. After Phage I purchase the Frozen Mallet then Trinity Force. After I have Trinity Force I continue purchasing the Recommended items.
If the game goes longer and I have Trinity Force and all the recommended Items I sell the weaker items and purchase items with Critical Strike %.
1 - Nimbus Strike
2 - Crushing Blow
3 - Decoy
4 to 5 your choice
6 - Cyclone
7 to 10 your choice
11 - Cyclone
12 to 15 your choice
16 - Cyclone
17 and 18 your choice
I usually get Nimbus first so I can harass the enemy in my lane and last hit minions after that I max Crushing Blow first, Nimbus Second, and Decoy last.
Quick Tip: If your enemies are starting to expect your Decoy (as soon as you Decoy they run to the nearest brush or towards your base) then start using the "S" key. While moving your Champion if you hit "S" it stops your champion. Using "S" is a great way to keep the enemy on their toes and makes your chance of survival increase.