This guide will tell you how to complete the Captain American Legendary challenge Guardian in Midnight Suns.
In this challenge, you will need to defeat five enemies. So you have to use the punch on the guy near the pillar and knock him into the wall to deal extra damage.
You will get the best defense card, and you have to bring out the defense card. Whenever you do damage, you will get blocked. After that, use the shield ability on three guys on the left side to knock them. It will give you tactician and punch.
Now you need to use a punch on the last guy and knock him into the wall to get the wall damage. After that, use the punch again on another guy and get the wall damage. Then use the shield bash ability to do damage based and finish them off with the second Shield patch.