Starcraft 2 Sentry Strategy
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I have decided to put together a guide on the best ways to use Sentry in Starcraft 2. This Protoss unit is
a hallmark Protoss unit and mastery of this unit is essential.
I would go as far to say as good control of this unit separates gold league Protoss players from Diamond
league and even low-Master's league players.
If you use this unit well, you win so many more games, particularly mirror match-ups and vs Zerg
With that said, in this article we will examine Starcraft 2 Sentry strategy by looking at each individual
ability first and then looking at the the race match-ups.
Force Field is what makes the Sentry essential to nearly every Protoss army whether it is a 4-Gate timing
push or 30 minutes into the game. When Force Fields are in play, good Protoss players will be able to use them for
a significant advantage over their opponent.
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The primary strategy these are used for is to create large walls in order to split enemy units up. For
example, if you have a Stalker-heavy army and are going against a Zerg player with a lot of Roaches, you can
quickly drop several force-fields down on the middle of his army, splitting them in half, allowing you to
effectively divide and conquer.
Many players have had trouble using this simple Starcraft 2 Sentry strategy. What you want to do is bind
Sentries to their own unit group (select all your Sentries and hit Ctrl + a number to bind them to that
When you are in battle, press that number to bring up your Sentries only. Give them a command to move
forward, pushing them to the front of your army. Many people think they messed up their force fields but really
their Sentries were just out of range. Make sure the Sentries have the last command to move forward and they will
push everything else out of the way.
Next, hold the "shift" button and alternate between the "F" key and clicking the map where you want to
place the Force Fields. Drag your mouse in a line where you want your wall to go, all the while holding the "Shift"
key and mashing "F" and clicking furiously. With a little practice, you can easily draw a wall of 6-7 Force Fields
in under a second.
Even low-ranking players can master this technique. Just remember it is better to overspend energy by
making too many Force Fields than it is to have an incomplete wall. Also, remember that you are placing the wall in
the front 1/3 to the middle of the opponents army, to cleave off a portion of the army. Do not try to build the
Force Fields too far back or your Sentries will get attacked in the process.
Finally, make sure to move your Sentries back after they cast their Force Fields so they can take cover
behind any Stalkers and Zealots you might have.
Force Fields on the Ramp
Another great way to use Force Fields is to use them on ramps. On small maps, a single Force Field can
block the flow of traffic up and down the ramp. On larger ramps, 2-3 Force Fields is enough.
You can use this both offensively and defensively. On offense, when you attack a player's expansion, you
can drop a Force Field on the ramp to prevent reinforcements from coming down and also to prevent harveters from
fleeing into the main.
You can also do the opposite if the opponent's army is out in front of their base. Drop units into the
main and force field the ramp. A good way to do this is to have Blink Stalkers and a Warp Prism. You can have the
Blink Stalkers move out across the map with a Warp Prism, blink up into the person's base, and use the Warp Prism
to warp in Sentries. Sentries spawn with enough energy to Force Field. This can often force a base-race situation
so make sure you have a Probe in a safe spot.
Sentries also are a great defensive unit. Whenever an enemy tries to push up your ramp, let a few units
come up then drop a force-field. By splitting the army in half (or just clipping a piece off the front), you get
free unit-kills. You can keep refreshing this by having several Sentries on rotation. A few Sentries prevents any
early game push from happening.
Guardian Shield is another great Sentry ability. It reduces incoming projectile damage by 2. This may not
seem like much but it really does add up. Consider that a Marine only does 6 damage per hit and you can see
Guardian Shield reduces base Marine damage by 33%!
Guardian Shield is most effective versus units with a low-damage but high firing rate. This includes
Marines, Mutalisks, other Sentries, and Hydralisks.
Hallucination was an ability that previously did not get much play but I have seen it used a lot more in
pro-level play. The first awesome ability is the hallucinated Phoenix. You produce 2 ultra-fast Phoenix which can
quickly scout the entire map for the low cost of free!
The other good ability works in early pushes and that involves creating hallucinated Colossi right before
pushing out. Normally hallucinations are ignored but since Colossi are a high-threat unit, players manually micro
their units to attack them. If the player has no detection, he will not realize that they are fake until it is too
Sentry Vs Races
Against Zerg players, Force Field is an excellent ability. You can use it to stop any early "Roach Bust"
by Force Fielding your ramp. Mid-game, it is perfect for a 4-Gate. If your enemy goes for an early expansion, you
can 4-Gate and as soon as you move in, drop a Force Field on the player's ramp to prevent Drones from fleeing and
reinforcements from streaming in. Keeping this Force Field up can win games outright a lot of the time. Late in the
game, use mass Force Fields to split up Roach and Hydralisk armies.
Additionally, hallucinated Phoenix are a must on large maps as they can quickly scout to see if the Zerg
is taking any hidden expansions. Since they can scout entire maps in 1 cast, you want to regularly do this to keep
tabs on the Zerg player.
Against Terran players, Force Field is solid early in the game for preventing any 2 or 3 Barracks early
aggression. Later in the game, Guardian Shield is an important ability as nearly all Terran players use
Against other Protoss players, Sentries are amazing as well. Force Field is a simple way to stop 4-Gates
cold; pretend that you do not have many sentries and force field your ramp after your opponent pushes half his army
up it. After you take that out, counter with your own army.
Since many Protoss do not get detection in PvP match-ups, hallucinating a few Colossi before pushing out
with Gateway units is incredibly effective as well!
While it is much easier to mass Stalkers at first, mastering the Sentry is not hard at all and it will
quickly become one of your favorite units once you get down the basic Starcrat 2 Sentry strategies!
Practice the force field wall regularly, drop force fields on ramps to prevent reinforcements, and keep
Guardian Shield up at all times and you will be leagues ahead of any player in Platinum or below!
Are you still struggling to get into the Diamond
If you answer the above question with a yes, then I urge you to pick up the
Shokz Starcraft 2 Mastery Guide.
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Terran, Zerg, and Protoss players that will have your opponents begging for mercy. Click here to get it now!