I think I managed to last 5 minutes at best before I died. Any shot or explosion that hits you, depletes your health and shield. When your health hits 0, your dead. There is a pause of about 40 seconds, and you are teleported back into a random section of the map. Of course in a game this size, you need to be able to communicate.
Infantry has a communication system that is fast and easy.
It allows you to talk to everyone, your team, or 1 person in private, as well as reply to the last person that sent you a message. I used the comm system a lot while learning to play which is how I found the Store. The store allows you to buy weapons, ammo, armour, vehicles and gadgets for your character. Not all items can be used though as some are restricted to certain skill sets. You can choose what skill set you wish to have at the beginning of each game, so what you pick DOES effect what you can use.