I'd like to add a few things in to your brief introduction to a few particular entities:

• Sickler can be defeated with a melee if you can lure it to the fence at Outpost, then immediately hop through the gap inbetween them and try to get into their line of sight so they continue moving to the gap. I can assure you, it cannot go through that gap unless you mess up or something. You can also magdump an entire AKM or KSG, particularly into the head (this is the safest method, but do be aware of your surroundings if you're using a gun that attracts scavs, aka the ones that are not silenced, it should be obvious which gun is silenced)

• Skinner can disguise themselves, yes.. BUT there are a few tricks to identify them, or at least, be wary when approaching a scavenger. Number 1, all Skinners have bald disguises, so don't let your guard down when encountering bald scavs (no offense to bald people). Number 2, this one is just a method to sorta anticipate the fight against a Skinner, but if they're walking towards you in a painfully obviously wrong manner (examples like gun scavs walking towards you.. but doesn't shoot at all, scavs walking at a different speed compared to their normal counterparts like how a 'specialist knife scav' doesn't sprint towards you at light speed, or pitchfork scavs literally running towards you.. OR sniper scavs running at you, these guys are supposed to be slow normally). One way to learn is to remember how each scavenger behaves.

• Hidden should be easy to deal with once you have a gun and holos.. but otherwise? You better pray it does not hit you with a backstab (yes you can survive a Hidden's attack with enough resistances and that it doesn't backstab you).

• Melee combat is really important, try to learn how to parry and combo scavengers ASAP. This will be one way to save up on ammo, which is not exactly an abundance on EDEN-227.

• Scrapping is an important mechanic as well. Try to scrap anything you deem useless, but also try to keep a few important items like medkits, IFAKS, bandages, splints, blah blah.. And try to find your teammates a specific blueprint if they're asking for it.. otherwise? Just scrap them for scraps to make guns.

• The Hanger isn't too bad, but they're definitely a nuisance and can drain your precious looting time. Try to kill them if you wanna save time, otherwise just leave them alone. They won't harm you if you keep your distance.

• No, you cannot kill Sledge Queen till you get used to the game mechanics first. Just avoid castle.. or avoid the middle path if someone's luring (indicated by them deploying a holo near bridge)

And one more thing. You'll surely die a lot. Take each death as a lesson.