Well, here's the thing: The game will encourage or discourage different types of gameplay. Skill level is also involved. And, n00bs will do whatever the heck they feel like anyways, so count on them to do the opposite of what should be done. (eg: charging the aliens after they almost nuke your base, camping during lulls of alien attacks, putting every single ret near the base in S1, or every single ret at outskirts of RC power area in S3)