Protoss PvT Gateway Zealot Archon Style

If you are familiar with the SC2 pro gaming scene, you will probably notice that most professional Protoss gamers are currently using the mass Gateway Style against their Terran opponents. Mass Gateway style utilizes the army mix from Gateways such as Zealots, Sentries, High Templar and Archons. The age of Colossus with Robo build has long been forgotten.

Why is Mass Gateway Build preferable?
Before we go any further, let's take a look at why Protoss players are opting for this build instead of Robo openings and Stargate builds.
1. Gateway units are cheap. Thus, it is worth to trade with Terran armies
2. The strength of Upgrades
3. Zealots with armor Upgrade are great Tanks
4. Efficient resource usage where Zealots only requires Minerals and High Templars require mostlly Gas.
5. In fact, Zealot Archons can be easy to micro while being extremely effective
6. Ability to reinforce instantly during late game with multiple Gateways.

Build Order
I try not to stick to a specific build order here. There can be a couple of different openings against Terrans such as 1 Gate expansion with 1 or 2 Gas, 3 Gate expansion and Nexus first. You are free to use any openings you prefer in your online games depending on the map and your choice.

Let's stick to the 3 Gate expansion for this build.

• 3 Gate into Nexus expansion
• At the beginning of the game, you should be getting only 1 Stalker, 4 to 5 Sentries and the rest being Zealots
• Twilight Council + Forge (Immediately upgrade Zealot Speed and +1 armor and Chrono Boost them. Twilight Council is more important and get it earlier)
• 3rd and 4th gas at your natural expansion
• 3 more Gateways
• Templar Archive
• When +1 Armor is done, get +2 and continue Chrono Boosting
• You army mix should consist mostly on Zealots, 5 Sentries, few Archons and a Stalker(or a few)

Some players prefer to be on the safe side by building a Robotics Facility mainly for Observers in addition to the 3 Gateways. Scouting what you see early in the game to check what you are facing can be important. As for me, I do not get a Robotics if I scout a Barracks build when I decide to 2 Base all in.

At this point you have 2 choices either to 2 base all in or to grab another expansion.
2 Base All in
I prefer to 2 Base All in my online games due to the strength of this army mix at the 12-14 minutes mark.

• Put down 2 more Gateways making a total of 8 Gateways
• Head over to the Terran base and engage him.
• However, if the Terran opponent is defending in a tight choke with multiple bunkers or Supply Depots in front, do not engage. Instead grab another expansion and upgrade Psionic Storm

3rd Base Macro Style

• Put down another expansion around the 12-14 minutes mark.
• Research Psionic Storm
• Continue Upgrades (You may consider getting another Forge)
• Prepare to switch to Colossus by building 2 Robotics Facilities

General Protoss vs Terran Game
As a Protoss in order to match the strength of the Terran armies such as the deadly Bio builds with Marines, Marauders and Medivacs, you ALWAYS need either Colossus or High Templar/Archons. Both of these unit does very well against the Bio ball. Without them, you will most likely lose the engagement due to the strength of Stim. Terran armies are very cost efficient early until mid game while the Protoss Deathball becomes extremely efficient during late games with units such as Colossus and High Templars. Generally Viking counters Colossus. Ghost counters High Templar. You should switch to the other unit if your opponent is overproducing the Vikings or Ghosts.

High Templars with Warp Prism
Mass Zealot and Archon, High Templar build is very vulnerable to Ghosts.

• When facing Ghost, always try to spread your army as wide as possible. Maintain a concave.
• Always have multiple Observers around.
• Feedback the Ghost with your High Templars. Select ONE High Templar and hold SHIFT while left clicking on the Ghosts. Try not to select all your High Templars and spam F click on the Ghost. This will send all your HTs to the front risking them of getting EMPed.
• High Templars with Warp Prism probably requires a lot of skill and micro to pull off. oGsMC showed us how to properly use Warp Prism to counter Ghosts. Do train your micro. 
• High Templar is so slow. With Warp Prism, you can always fly through your army and drop them landing multiple good storms. Be careful not to get sniped by Marines.
• Warp Prism prevents the HT's from getting EMPed.

Good luck in trying this build. Do ask if you need any clarifications.