#2. You have options for your assault - Not only do most rooms with enemies have two doors, some even have alternate approaches. Some may have skylight points to rappel, some may have windows to shoot through, and not to mention the many options for going through a door, such as flash, frag, and breach.

#3. You have two teammates, and you are not them, thus, they are better suited to enter the unknown - So if you don't know what is around the corner, send your friends ahead of you. Even if you think the area is clear, send your guys ahead of you anyway.

#4. Would be #1, but by now you better realize cover is a little important - Yes, stay behind cover as long as you can, pop out to shoot and return to the cover. If you are under fire, go hide, it's that simple. The new sprint button helps a lot too.

#5. ACES high - The new ACES system, which is the same as any RPG leveling up scheme, will let you gain new abilities and items as you progress. You will probably use more long range attacks, so your Marksman rank will advance quickly. Assault and Close Quarters points are harder to get, but with some attention you can focus on those too. The point is, you get new stuff for getting higher ranks, so it's up to you what you unlock.

#6. Mix and match - Part of all the items and things you unlock, you can use different combinations of guns and attachments. So for almost any gun you can put on a nifty scope. And in this game you can change up your armor, but pay attention to how much mobility you sacrifice for protection.