The game is Command & Conquer 3: Kane's Wrath. The mission is Tacitus Interruptus, on Hard mode.
So, we gatta stop a GDI MCV reaching the docks, we gotta capture it, and we gatta get it to a certain spot. Cause it has the Tacitus in it.
Great! Probably wouldn't be too ridiculously difficult on its own. But there's also some intel we have to collect if we want to complete the mission fully.
Fortunately this walkthrough does just that.
The overall plan is to secure the large Tiberium field to the West and strike the GDI MCV quickly so it unpacks.
Then, while defending, we build a strike force of Avatars, Beam Cannons and Raiders, head up and remove all the threats on the "right hand side of the map". We also do the Tiberium explody thing for that Bonus Objective.
We capture the MCV, which triggers a Scrin attack. Our strike force holds its position, defeating the incoming Scrin forces and scores us the intel.
Meanwhile we escort the MCV to the rendezvous point and complete the mission with all intel and the Bonus Objective completeness completington.