This, thank you...subsequent expansions were instead focused on memorizing which building or upgrade unlocked which unit or power and abusing this or that exploit
+The eldars were fucking annoying to beat because their builders could teleport across the map an start building again... plus they could make the structures invisible...
+In one optional mission to gain a perk to attack 2 times in the same turn, you have to gain the favor of a chaos demon... it make sense if you are playing with chaos but if you are a space marine is like wtf.