Beat Indiana and win the Big Ten.
I don’t know if the stakes have ever been as high in an Indiana-Purdue game at the end of the season. The closest is probably 2008, when both teams were ranked heading into the only meeting on February 19th. Purdue was 12-1 in the Big Ten and Indiana was 10-2, both with aspirations to win the league. Indiana won, then promptly quit once Kelvin Sampson was fired. Purdue would later lost at Ohio state and finished a game behind Wisconsin (a team it beat twice) at 15-3.
Indiana doesn’t have much to play for here aside from ruining our season.