Walkthrough: Star Craft 2 Chapter 1 - Mar Sara

Your Mission is to destroy the Dominion outpost using only marine units as well as Jim Raynor. Starting with 6 units including Jim, you’re set out to scout and explore your map to the right by selecting your units. You could do this either by holding the right click then scroll to select all the units. You could allocate them by pressing ctrl+0-9 to recall you’re units by just pressing the numbers that you have chosen for that particular units/unit.  

 

Scout the perimeter until you reach two dominion forces. Dispose of the 2 Dominion Forces by selecting all units and pressing A on the keyboard then click on the ground near the enemies. This would enable your units to attack any visible target nearby.

Moving along, as you pass through the two guards there’s an additional bonus objective by destroying Dominion Holoboards. Actually there are six holoboards to be destroyed.

Move up past the Holoboard, there are enemies ahead but just 1-3 soldiers depending on your choice of level (casual, normal, hard, brutal). Next, there are more enemies ahead however wait for your companions to be deployed before going for an ambush.

After that, destroy the 3 holoboards near that area one is already in that area, the two are located south and west.

 

Going up ahead, there are more Dominion Forces ahead. Save the civilians and they would help you soon. Dispose of the first two soldiers’ then attack the remaining enemy forces. Lastly destroy the holoboards as you move around.

 

There are civilians willing to help you on your mission. On brutal mode, use them to attack first before attacking them to minimize loosing more of your troops ahead.

 

Burst through or let the civilians take the first attack then make your move to finish the mission.