When I started playing this mod, which was around 2.15, I thought man this is BS, I get killed by something out of nowhere. I still kept playing, started to think more or less like a soldier. Again, practice makes perfect. Now, remember to move from cover to cover. Squad up, indeed. But also play with the squad. Remember to get in TEAMWORK or TEAMPLAY squads, since the squad leaders are not likely to be douchebags. They'll help, trust me.