Here is our non-character swap strategy for Angry Birds Star Wars II Rewards Chapter level PR-27 (Agent Kallus). This update first became available in the Angry Birds Star Wars 2 Rebels update, which you can read more bout here.
Reward Chapter levels are unlocked by obtaining a predetermined amount of damage points with a specific character. For a complete layout of these thresholds, see our achievements list. We also have a handy Complete Characters Guide that breaks down all the characters and their abilities. If you have a different strategy leave a comment below; however, don't just post your score via the comments, as that's what the leaderboards are for.