-Unlock a Certified item by playing online against real people. You can unlock a certified item playing by yourself or with friends. i have unlocked two of them. one solo and one in 3v3 in a XBL party
(no exhibition or private matches)
-Check to make sure your item is in fact "Certified" by going back to the main screen and selecting "Garage" and then "Manage inventory"
-Select the specific item by scrolling over to it. You should see "Certified" on the right hand side. it will be underneath the name and the rarity descriptions.
-Just below and next to "Certified" they have descriptions AND names attached to it.
-The levels are not numbers. They are what the item is NAMED. and how you get your achievement
-1st level should read- Play maker
-2nd level should read-Capable Victor
-3rd level should read -Veteran
-To level up your item you MUST play online (no exhibition or private matches) with the item actually equipped on your vehicle AND do what your specific item requires such as score long goals,turtle goals,MVP,epic saves ect. Each one is different so just make sure and check it out before playing with it equipped.
---IMPORTANT THINGS TO NOTE---
-You CANNOT level up the certified item in exhibition mode or in private matches. its has been tested and confirmed.
-Once you have leveled up your item one time and got this achievement "one better"
make sure and go to your dash and quit the game, using the 3 line button on your controller select quit and then start the game up again. It is possible to skip the process of reaching veteran and it may just unlock the achievement "Certifiable" if you are lucky. This is what happened with me.
-Just because its a mariachi hat that does not mean you will have long goals like i do.The item itself can have different goals/objectives. To put it simply. i have a certified mariachi hat and my buddy has a certified one and i have long goals and he has epic saves.
The goals/objectives are different so make sure and read them and understand them that way you are going for the correct objective.