In this page you can find a detailed description of "Chronic Survivor" achievement that you can unlock in Get Even. To get this trophy you must help Boyce in his escape from the Asylum.
The first step to unlock this trophy can be done during your first visit in the building C of the Asylum while you are playing as Black. You visit the block C for the first time after completing a memory called "Jasper's Dying Minutes". During your exploration of the building C you can come across the cell presented in the picture above inside of which you can find Boyce.
Note - Boyce appears in the cell ONLY if he didn't die during the infiltration of the ADS building as part of Black's memory "Job for Robert Ramsey" - meaning that it happens if you received the Survivor Syndrome trophy earlier. If Boyce is not in the cell, repeat the aforementioned stage while staying hidden.
Boyce asks the main hero for a crowbar. This item can be found nearby - it is leaning on a radiator (the picture above). Fulfill his request.
The final step for getting this achievement can only be completed during your second visit in the building C which takes place after "Meeting with Rose" memory. During your exploration of new areas in the block C you can meet Boyce (you can recognize him by a crowbar that he holds in his hand - the picture above) and when this happens you will get this trophy.