First Attack and Bump Attack are very useful badges when you're at a high level, but need to battle weaker enemies. Both of these badges enable Mario to instantly defeat low-level enemies without having to battle them. While you can buy First Attack after Chapter 2 in Paper Mario: The Thousand-Year Door, you'll need to put in some work to get Bump Attack. In fact, you'll want to start searching for Bump Attack when you're at a much higher level. Getting this badge involves working your way down the Pit of 100 Trials.