Memorize Where Power-Ups Are
Speaking of power-ups, they are spread out across every level and they will afford you some powerful weaponry and gadgets that will help you earn points if they're used correctly.
For instance, the shield will help you and your squad capture points. The smart launcher will help you take down vehicles with greater frequency. It's important to use these and better yet, it's important to know where they are on each level.
Commit their locations to memory and you're going to be better equipped than a lot of enemies you encounter on the battlefield.
This is particularly important now that Lando, one of the heroes in the Bespin DLC, can lay down fake power-ups that can wipe you out.
Pay attention to the direction they're moving. Lando's fake power-ups move differently than the standard version.