Whats the best thing to unlock first?
That’s for you to decide. It is mainly determined by your play style. If you like being right in the fight without having any extra function, you will most likely want to unlock the M16/Life-2 and run with assault. If you like being able to tear your way through both vehicles and infantry, the Anti-Tank mines may be the best bet for you. If you want to have more functionality as Recon, then pick up the binoculars. You almost always want to go with gadgets for your first unlock as they tend to offer much more to you and your team than a new gun will.