For Runes get mostly AD/Attack Speed make sure there all tier 3. Try to include at least some armor/health/magic resist. my quints are movement speed/armor pen/attack damage per lvl. These provide some basics in case u mess up or ur doing bad.

while some may question the use of malady and 2 phantom dancers, these are for quick assassinations. For example, someone is running away, ur comin for a gank and u deceive over a wall and kill him via 2shiv or basic attack.

Malady is for the ap and on-hit effect that will benefit ur clone. The extra attack speed is a bonus.

The phantom Dancers are for the get aways and the crit chances. Also, the extra movement speed helps for map mobility and ganks, along with the boots of mobility.

After u get infinity edge, sell doran's shield and get hextech gunblade. Once u get that sell malady and get bloodthirster. You won't normally get this far, but if u do u are extremely fed.

We all hear the "u noob heal" or "noob heal" but use it for more lane durability and to bait people into ur towers. For example, u have "low" health and they turret dive u thinking they can take u but u use heal and there screwed.

Most people run a double flash on Shaco because of the distance u can cover and those rare moments that u can get a kill before u get deceive.

Always go behind ur opponent when using deceive, in attempt to use your passive.
When running away plant ur jack in the box in front of u to fear and slow their pursuit.
Try to harass as much as possible with ur 2shiv, aim for squishy champs.
THIS IS NOT A JUNGLING BUILD SO DON'T JUNGLE WITH IT!!!