Frontlines?

CoD4 has easy sniping compared to this game. If you put the crosshairs on someone with a 50 cal and they don't have juggernaut, they die. You can easily track someone across the map and hit them while running in CoD4. In Frontlines, it is WAY more difficult. You can shoot at a guy 3 times standing still with the crosshairs dead on his torso and not hit him if you don't adjust for distance.

The CoD4 players who will adjust the quickest to Frontlines are probably the guys who use SMGs. Since SMGs are short range weapons, you tend to aim more with your body than with a scope or red dot. IOW, you learn to keep the enemy centered in front of you to take the shot without aiming. Same thing here. If you get into a close up firefight with someone and you have to aim, you're toast.

I will say that this game has a goofy melee. Whack someone with the butt of your gun and they die. Fun being sneaky sometimes.

One of the things I like to do when we're about to capture another objective is to hide my guy and use the drone to hover over my teammates. That way, if we don't fully capture the objective because the enemy runs in to kill the teammates, I can detonate the drone and keep the enemy from recapturing it until my guys respawn.