Chasin' Papers Trophy in Twin Breaker: A Sacred Symbols Adventure

You should be collecting all the coins you can as you play through the campaign (on both standard and NG+) so you can get the scores required for the Collectibles and the S Ranks, so there's a good chance this will unlock naturally. If you've finished both runs of the campaign and still don't have the trophy, start up "Catcher Mode" from the main menu. In this mode, you have to collect coins that drop down from the top. Only Bronze coins will fall at the start, but after a few levels, Silver coins will start to fall. Just keep collecting them and as soon as you've picked up your 50th Silver Coin, the trophy will unlock.

You can track your progress towards this trophy by going to the "Trophy Room" and then "Stats".