Proceed through the main missions until you have access to Sequence 2:
Memory 3. Proceed through Sequence 2: Memory 3 until you reach the area
where the three templars are standing around a table. The "Pickpocket
All Templars" optional objective will appear while standing next to
them. Pickpocket all three templars, then pause the game and select the
"Reload Last Checkpoint" option. The money you pickpocket from the
templars will be saved, and you can pickpocket them again. Repeat this
process as many times as desired to get an unlimited amount of money.
You can get approximately 35,000 R every seven minutes using this
glitch. You can use the money earned from this glitch to easily buy all
weapons and gear in the game. *Note:* You can load any sequence and
memory you have completed throughout the game, allowing you to use this
trick at any point once you have access to the specified sequence and
memory. Additionally, this glitch was done on an unpatched version of
the game. After the patch has been applied, the glitch can still be used
if done once you reach Sequence 2: Memory 3, but it cannot be done after
completing the memory.