Try before you buy
So you want a big gun, but you don't have the big bucks? I know exactly how you feel, and The Respawnables knows how that feels too, which is why they give you the option of trying things out.
And it's pretty generous. Essentially, you can rent a big, fancy, powerful weapon for 24 hours, and all you have to do is watch a 30 second ad.
Yep, that's it, and you can be playing with big weapons all day. You can happily just rent a new weapon when you log in, or find one you like and consider purchasing.
One of the best ways to win multiplayer is to work with your team mates. Go in as groups, and work together to pick off enemies.
You can assume class roles, with faster weapon types and heavy weapon types, in conjunction with the right sets of gear, to create a varied team.
Just don't group too close together, lest you get picked off all at once by explosives or grenades.
The high ground. In which game is the high ground not a good thing? Exactly - it's great, and you should make the most of it.
Especially when in team play. Backing up your pals on the ground with rockets or heavy machine gun fire from above will boost their chances greatly.
And the best part? No friendly fire - you can shoot and not worry about hitting your friends at all. Nice.
Of course you're going to perform better in battle if you're fully equipped with everything you need, and gadgets are a part of that.
Gadgets include unique tools, like invisibility cloaks, and so many grenades. So many.
The only problem is that you get limited uses with gadgets, so you can't just throw them out everywhere. Be careful with your aim, but be confident in the way you play the game.