The gauntlet are 25 random challenges of drills ramped up. This isn't too tough as long as you read your goal. Some tips
-Goto settings on main menu and be on rookie, use a pumped up roster for easier times
-Don't fret about ladder challenges, most are very tough as the AI is cheating with big players
-There is a drill asking you to run to the endzone only using hotspots, stay on the left side
-The boss challenge to run past all the defenders is easy as 3/4 just run straight down and are blind towards you. Only worry about the 4th
-If you beat a ladder challenge and skip over lvl 25 you get the trophy still