http://www.playstationtrophies.o ... -guide-roadmap.html
If you didn't complete the game in less than three hours then you can use chapter select to redo a chapter you felt you could've done better in. You will need to rescue all the Mudokons again in the chapter you're repeating. Thanks to THE-123-GAMER and Wozamil for confirming this will still unlock the trophy.
重打章节时也要全拯救,时间会更新,奖杯会在制作人名单出现时跳出,所以要重打最后一关