Metal equipment 5 phantom pain quiet 5 sets of clothing how to unlock

How to unlock the five sets of clothing in "Metal Gear 5: Phantom Pain"? Many players don't know much about this. Don't be impatient. The following system is a series of tips and tricks for you to share with you. I hope everyone can enjoy it.
1, the 40th level of World War II quietly use the method of not letting go after unlocking the sniper wolf costume; 2, there are 35 off to unlock the XOF clothing, but personally think that it is not exposed at all 3, blood: Good sense of 30 or more, R&D level 15 or above, development cost 186,000GMP; 4, silver: good sense 70 or more, R&D level 19 or above, development cost 350,000 GMP; 5, gold: good feeling 100, R& D level 22 or above, development costs 570,000 GMP.