https://wccftech.com/xenoblade-chronicles-definitive-edition-time-attack/

Xenoblade Chronicles Definitive Edition will feature a challenge mode that is not available in the original release or the Nintendo 3DS port.

Today, it has been confirmed that the soon to be released Nintendo Switch remaster will feature a Time Attack mode. This mode, which will be accessed from a portal found near the Furnace in Colony 9, will task players with clearing waves of enemies in both Free and Restricted modes as quickly as possible. Upon completion, players will receive Nopon Crystals that can be exchanged for rewards like new equipment, gems, and even new costumes for all party members.