Well. Let us evaluate and help each other, yes?
Ok. My opinion on the map. I think the map is a pretty decent map. The good things about the map is it is machine warfare friendly (tanks, helicoptors, etc.), it is good for either rush OR conquest, and it isn't that bad when you have a small amount of people. The bad things about the map is it can be very one sided at some times, it isn't that much better than some of the maps we already had, and that is it...Lol.
Now, to getting to know the map.
For Rush: If you are defending the 1st point, you usually spawn behind the stone temple. Go to the left side of the temple and hide behind the stone short walls and pick off the enemies trying to plant at A and the enemies coming from the river/hill. If you are attacking that 1st point, you want to either get in the helicoptor, a tank, or flank the enemy by going to the left side and either flamethrower or medic the whole enemy lines so your team can get some plants off.
For the 2nd point defending, GET UNDER THE MAIN HILL! Get your whole team to get under that hill right before the village where they plant. Make sure your team is there to throw medic and ammo packs. When attacking the 2nd point, you need to hurry up and rush over the hill, or you are pretty much done. Make sure your team cooperates and they rush over the LEFT SIDE of the main hill so they can sneak around and get the plants off, which will distract the defending team into defusing, which can get your main force to get into the village.
For defending the 3rd point, just get near the M-COMs. There isn't really a huge spot where you need to be at this point. You just need to be looking around and making sure no one is planting, shooting at you, or knifing you. For attacking the 3rd point, MAKE YOUR TEAM ATTACKING BOTH POINTS! Get your tanks and heavy artillery to attack A (the farthest point from the earlier M-COMs) so the defenders get distracted, and you plant at B. Then they try to rush over and defuse B, so this is when you push A hard and plant, then win the match.
For Conquest: If you are on American side, GO FOR C!!! If you can take the NVAs closet bases, then you can win the match. Let your teammates take the closer bases, but get your squads to haul ass to C. If you take C, get ready to defend it, because there is going to be a lot of resistance. If you are on the NVA side, make sure you get C. Then, get your squad to flank the American side at A. If you take A, you pretty much will flank the whole American team and win the match.
So there you have it. My helping hand to you in the level Operation Hastings. Hope I gave you some good advice.