Imagine All That Imaginite! Trophy
Imagine All That Imaginite!
Open 50 Imaginite Chests
This will come naturally as you play as you get tons of these while playing. There are also microtransactions in the game, so if you really want to, you can buy chests for real money. I highly advice against it as there is absolutely no point in doing so for any trophy and you can literately farm 50 of them in an hour by replaying the first level.