Easy to kill, but to kill it, you can only try once or twice till your money goes down the drain. Here's how to do it...
Invest in Hallucination and at least about 8-10 HT's, 4 Arbiters, 4-6 Carriers, 4-6 Reavers and the rest ALL Zealots (Forget Dragoons, we want Tank killers).
Now, the plan is easy, wait for 250/250 mana on all the HT's, Hallucinate the Arbiters AS MUCH AS POSSIBLE and also Hallucinate some Carriers as well (Carriers' interceptors are the bait for bunker and missile fire). Now, make sure all your ground troops are in a nice bunch (So recall will get ALL of them).
Now march all your hallucinated units into the turrets/bunkers and make them take all the fire (You should have about 16-24 Hallucinated units which will last), as soon as you tell the hallucinated units to move, tell the real ones to move as well...
Once you have done that and you are on the move, hopefully the Hallu's are taking all the fire and your Arbiters can Recall with relative ease and your army is ready to poon his base.
Tips- Hotkey every unit, and i mean EVERY unit. Including the Hallucinations.
- Recall in four different spots so you aren't too cluttered and the Tank fire wont totally decimate your army.
- Kill probes for food, you have plenty of time to gain resources with a turtled Terran.
- Get Brood War. Corsairs rape any defense. Disruption Web > you.