I'm planing on doing a run for the 100% all medals category does anyone have any tips to give me.

All medals looks incredibly difficult. The secret medals are pretty straightforward, but for the main game medals you have to complete every single mission on insane. Other than knowing how to get the three secret medals (use a machine gun/elemental gun on the fruit in the market level, walking through the box during the tutorial, and playing a tesla coil killstreak on the middle couch in the base), my only advice to you is GOOD LUCK!