Can you list out a bunch of tips for playing Zerk? My buddy switched over for Killing Floor 2 and I will show him your post. Best weapons, build order, strategies, that kind of thing.
Keep in mind that I'm far from a pro, but I'll try and help to the best of my ability.
For weapons always buy a pulverizer as soon as you can. You will need one of these when the bigger things start showing up. You should naturally have enough on normal and hard, but you might need to forgo armor for a wave in suicidal, and you will absolutely have to forgo armor for a few waves on Hell on Earth.
When playing on Suicidal and HoE you'll also want to buy the nail gun once you have the pulverizer. This thing is much better than your pistol for taking out bloats and husks. Just make sure you activate the alt fire.
My current build order is extra ammo (for bloats and husks on suicidal and HoE), clot grab immunity, and the 15% damage debuff that affects enemies every time I melee them.
Strategies heavily depend on difficulty due to the zeds getting new attacks so I'll list the tips by difficulty.
Every Difficulty
Stay close to a medic while playing multiplayer. Medics are a berserkers best friend.
If there is a Siren in a group, make her your target. She goes down real easy to pulverizer heavy attacks.
Fleshpounds are highly susceptible to explosions, and unrage after a parry. Use this to your advantage to take them out fast while keeping the rest of your team safe.
Don't parry scrakes. Once you stagger them with a heavy attack from a pulverizer circle strafe around them while spamming light attacks. They'll be constantly turning to attack you, and most likely won't get a single attack off.
Normal
Rush up to a husk and use the pulverizers heavy attack to take it out in a single hit.
When facing a bloat sprint in then out to trigger his puke attack and then run back in to attack while he's recovering (also applies to hard)
Hard
Keep in mind that husks now take two heavy attacks from the pulverizer. Because of this rushing in is very risky as the husk can now self destruct and it deals a lot of damage. You're better off leaving husks to your team or taking them out with your pistol/nail gun.
Suicidal and HoE
Getting close to a husk or bloat is pretty much suicide. Bloats can now run at you while pukin, and husks now have a huge flamethrower attack that might as well be a death sentence if any other zeds are around.
Boss Strategies
While playing solo you are better off selling everything and buying an AA12. It seems like the berserker weapons don't do much to him.
While playing multiplayer, try and get him into a parry loop. When you parry his melee attacks he almost always follows up with another. Combine that with a medic that has the ability to restore your armor when you heal, and you're practically invincible while the rest of your team wails on the boss.
Here is an example of the parry loop (It start at 2:09)
http://www.twitch.tv/tminator64/c/6603670
