Board Thread:Off-Topic Discussion/@comment-9605025-20140706023542/@comment-9605025-20140713034124

Yes, I have done everything with Bumblebee v1. That is, as much as the game will let me. I have one more star to get. The third one on the first challenge stage. I just got the second one today after several days of frustration for getting close but not quite to a 30k score. I have not unlocked any other characters yet although I have more than enough resources to do so. Like I said, the only gear I have upgraded is the promotional one. It is now at level 46/50. Meanwhile, Bumblebee v1 is at 15/20 so I am getting close to upgrading him as well. My plan is to fully upgrade Bumblebee v1 before playing as any other character.

By saying that your highest level is 20, I am assuming you have only upgraded common rarity gear?