Foxtrots got it mostly but you didn’t understand why an astro miner/demolitionist might have access to high explosives? Shields obviously modified from something that protected him and other from explosives/shrapnel
Mines are obvious as well
Buckets sentries are from his modified repair robot chasis which has a fabricator in it his chassis was partly chosen because it was easily moddable which is why he has a rocket arm.
Not sure why you think Abe’s stuff is a mystery? You got it immediately tracking dart to track targets and stasis to make it easier to capture his marks alive.
Cabot’s kit is from being a planet tamer? Heavy weapon to take down large wildlife, damage amp to help with that as well, dust tagging to track dangerous creatures over a wide area or to clear an area.