As destro you’ll make your way to the big platform you have seen in way to many missions. You’ll see several turrets you can activate for the upcoming 3 wave defense section. First wave is just various robots. Wave 2 lady jay appears with the various enemies. You can see where she is by her asterisk symbol on the mini map or the gi joe symbol. Just run away from her and kill regular scrubs from far away and once last one dies lady jay vanishes. Rinse and repeat for wave 3. Scarlet appears but will charge you at start. Just stay away from her and kill all the regular enemies. Once they die scarlet runs away as well. I’m not sure if the turret kill on her counts for this so I would just avoid using them.