Actually there's no need to catch all the collectibles in the game to fullfill this trophy: just complete the 100% exploration for all the maps/area in all planets.
It is quite clear that during the process you will probably encounter almost 90% of the collectibles, so it's reasonable using a guide to complete everything at once, but as i said and to be correct, just 100% of exploration needed.
In my case, i got it whitout 1 secret and 1 databank.