Sleeping Dogs: Definitive Edition

Here is a wild Achievement Hunter Map showing the Central part of the city with all the goodies available.

http://maps.achievementhunter.com/guides/map/sleepingdogs/ce...

towards the southwest part of the map there is an extra lockbox that is part of North Point's collection.

Also they appear on your map after doing the free running mission with Ilyana. Well into the Central part of the game.

Near the middle of the game you get the mission "VIP" which you have to complete. During the mission you will get in contact with Ilyana. You will get her phone number after the mission. Call her and meet her at the K-Bar. She will challenge you to a Freerunning race which you have to win. Now the locations of the lockboxes will show up on your map.

Timelinks:
North Point - 40 Lock Box Locations

Aberdeen - 15 Lock Box Locations

Kennedy Town - 15 Lock Box Locations

Central - 30 Lock Box Locations

Map with all Collectibles:

Numbers match up with the counter in my video guides.

This achievement is acquired by finding and opening all 30 lockboxes in the central district.

As most maps I've found online have 1 or more lockboxes missing on them I will include my video guide below that shows a decent path to collecting them all including map locations and contents of each lockbox.

There locations can be unlocked by dating Ilyana later in the game but are available from the beginning unless otherwise stated in the video.