Hello. Some feedback

Slots on backpack - very good, reducing size and in the same time cashbacking part of it a form of slots is very nice idea

Steps in the forest - another very good idea, I like that a lot, gives you advantage when you still. Had to run in rug shoes for some time - those are nightmare : 0 insulation, brakes very fast, loud as normal boots. I guess that what it take to have "temporaty" foot wear. It's sad that they're not silent anymore, loud forest steps and fast decay would counter benefit from low noise.

Shotguns - you haven't added a lot since single shot spartan shotgun. Maybe semi-auto one that dusts on the shelf, or powerful one-shot kill KS23 from vigor? Having very powerful rare shotgun capable to kill with only one bullet would be nice, platecarriers and helmets counter normal shotguns signignificant, giving a wearer time to deal more shots than shooter.