I spectulate it has something to do with the replay feature and/or the fact all equipment are then unlocked. But its early and I'm to tired to test that possibility tonight. Probably because rank doesn't reset. And even though the gloves are suppose to only work after level 6 regardless or rank, they still work after the reset. I also feel like every replay gives more points, probably due to the card resets but once again its all a guessing game.
Impressive. +1 for finding the solution. If you get to stuck/frustrated on any of the others (which I doubt, all others I found simple) let me know. Or if you want any help with the guide.
@MrRubix all we need is the first mission's chinese translated. At the moment I have found 3 of the 4 characters 您想要. The last one is the pain in the ... but don't get me wrong it took me a while to get even that much. Current it translates roughly into 'You want the ____'. Hope my slaving helps.
 "The Enchanted Cave 2"){kind=icon}
 "Trigger Knight"){kind=icon}
 "Smoking Kills"){kind=icon}