I think that it's a little unfair that you are limited on your ability to actually infiltrate with the infiltrator. To be good at close quarters fighting or defending a point that you are sitting on, it seems you need at least a scout rifle which is very expensive. proximity mines is also very useful and also very expensive. decoy grenades are useful but not necessary. the main point of this is that you're stuck with a sniper rifle until you have a thousand certs. which i think is pretty ridiculous. If you're going to call the class an infiltrator, let it start off with the type of weapon most useful for infiltrating. Or at least give us a choice when we make our character.