That infamous platinum takes way longer than it should thanks to the blast shards. I was missing three the first time because I used an inaccurate map.
Got em on my second playthrough. On the second playthrough I refused to move on to the next Burrough unless I had collected all the shards from the previous one.
Back to sly Cooper, those games are under hyped IMO. Jak and Dexter and Ratchet and Clank received way more recognition but the sly games are just as good.