Yes, move everything to storage. You can gave multiple handguns.
The only exceptions where you can use other weapons are:-
* You are allowed to shoot explosive barrels throughout the game * You are allowed to use the Harpoons during Del Lago boss fight (Chapter 3) * You are allowed to kill enemies with Cannons in the castle (Chapter 7+8) * You are allowed to have enemies get killed with the wrecking ball (Chapter 14) * You are allowed to kill enemies with the machine guns on the Island (Chapter 15) * You are allowed to use the Special Rocket Launcher at the end of Saddler Boss Fight (Chapter 16)
You can check the counter under Challenges > Main Story > Minimalist, it has to stay at 0. If you use anything that voids this trophy the Challenge counter will be 1 or higher. Its best to check this counter after each chapter and to save in a different slot after each chapter, in case something goes wrong you can reload the nearest save and replay from there.
Thank you!
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Not changing this sig until I decide to change this sig. Started: July 6, 2005