Newtron Achievement in Sonic & All-Stars Racing Transformed

Didn't get this one after 10 games using random characters....so I googled it and found on ps3 trophies site the description says "manually select a character in matchmaking" which is also wrong...so I'm gonna guess its a mixture of both: manually choose random characters for 10 matchmaking games...guessing I didn't get it because I left it on the default setting of random instead of manually selecting it in character selection.

My bad...while actually looking through my chevo's it turns out I already have this...the description on this is wrong here and is right on the trophy site...just manually select a random character during matchmaking just once.

This popped after just one Matchmaking Race as Random

Looking to boost this achievement and the other online ones. Only have xbox gold for the weekend though so please hurry :) Gamertag :DrWho1207

Is this achievement even possible? I tried to have some matchmaking games and there was literally no one but me. Message or add me please I need help/people for the online achievements. Gamertag: Voraga

Can confirm in 2018 this is still possible, and you only need to select the random ??? character 1 time. You don't even need to finish the race since achievement pops at the start. Just pick standard race and wait a few minutes, and keep trying throughout the day if no players online.