Good work. Just some suggestions for the Persistent Upgrades section:
The names for the Persistent Upgrades... They do not have names. Therefore, what you call them should be as generic and non-conjectural as possible, i.e. not using names coined by someone thinking it'd be a cool name.
Quick-er Revive: Nice and straight to the point.
Reaper: So, you reap? Does it give you a scythe? Where did that come from? Just call it Red Insta-Kill. Call it what it is.
Metal Barriers: I would change it to Metal Barricades. It is just more accurate.
Headshot Multiplier: Great and straight to the point.
Cash Back: Coined by a Youtuber user, but I guess it is accurate, so I don't mind that one so much.
Jugga-Jugga: Just sounds immature. Super Juggernog, Juggernog Plus, Juggernog Pro, anything of that nature I think would be more professional.
Half Off: Just add a hyphen: Half-Off.
Random Box+: If you're going to add a plus sign, I think you should be consistent, like Juggernog+, Quick Revive+. If not, name it something else, like Box Upgrade, just as an example.
Flopper Lite: Good, I guess.
Longshot: Same.
Pseudo-Perma Perks: Perma Perk is a madeup term. And why pseudo? The keeping-one-Perk thing is just as much one as the others. Give it a nondescript name like the others, like Keep-One-Perk.
(I am unaware if codenames exist for these things. If they do, that is new, and I apologize for my mistake.)
Also, "Flopper Lite" neglects fall damage whether or not you're prone.
Lastly, "associated Perk" or "associated Power-Up" is just unnecessary. Some, like the Quick Revive one, obviously are related to a Perk in a way. But some, like the cash back one, are related only through conjecture. I think it best to remove that entirely from your post, as it has no relevance. For example, how is the Headshot Multiplier related to Deadshot Daiquiri? Because it has to do with headshots? By that logic, guns are related to Deadshot Daiquiri. Like I said, cleanest solution is to remove that entirely.
If you need help, I'd be happy to provide information.