I made a much better mission compared to my two test mission modes. Here you play as Donkey Kong on Spear, on Luigi Circuit. You will have to collect all 9 fake item boxes which is placed on the course.
Play this and more missions in Wexos & Atlas's Mission Pack: • Mario Kart Wii - Wexos & Atlas's Mission Pack
My custom missions: • My Custom Missions
Mission Mode in Mario Kart Wii?!?!?!
• Unused/Beta Mission Mode found in Mario Ka...
MrBean35000vr also made a code for showing the hidden "Mission Mode" button (he also made the BRCTR edit for that menu). However, if I press that button, not all the correct files will be loaded when I start the mission.