Honestly, the berserker is hard to use. You're almost required to parry (especially scrakes) and then get a hit in. I typically just go full out hammering on flesh pounds and it seems to workout, but scrakes are something else.
As for Hans, I find that it's extremely difficult to get out of his range or line of sight after hitting him, which makes me think maybe berserker should get more of a movement speed increase. This could also make helping teammates and gaining exp easier since I believe the radius is very small.
There is a skill that increases movement speed (when you go below 20% hp I believe), but that to me just seems pretty useless most of the time, especially against Hans. I'll be lucky to even be below 20hp if I screw up a parry or something.
Also something I just now started thinking about, and correct me if I'm wrong, but you move slower when you have low hp right? So with that berserker skill, does it negate that low hp slow down and increase your movement speed or does it take the low hp slow down and then give you your increased movement speed?
Yes, you're totally right about the scrakes. As a berserker, I've seen others who just "Block" through their 'ballet of death', only to see them on the floor, sawed to death. Scrakes are probably the biggest anti-berserker zed right now and if it's not their 'holycrapwtf' damage, it's their incredibly-hard-to-parry three strike wombo combo. Seriously, sometimes I parry and it SHOWS a successful parry (little flash of light on my weapon's handle, and a TINK! sound), but the scrake just says "NOPE" and continues twirling as if nothing happened. It's baffling and frustrating anytime I face these damn things.
Fleshpounds are also annoying, because they got that lovely "HULK SMASH" move that negates your parry-stun no matter what. Even if you somehow do a successful parry and take the small damage, but he'll still do his second smash right after that, making it impossible to parry him and taking the 2nd damage. HOWEVER, I don't mind this because the damage from it isn't really enough to make me scream in my mic "OH GOD, MEDIC! MEEEEDIC!", It's the scrakes that do.
For Hans, just stay on him, circle him, and wail on his buns. That's all I can say.
Yes, the movement speed skill is completely useless to the point I laughed my *** off when I read the skill. I felt like someone at Tripwire was completely trolling with an idea like that.
P.S. the Fleshpound also apparently has a move that says "SOD OFF" to Berserkers, basically their Front Kick attack. It shoves anyone back, does damage, and I believe it breaks through a parry attempt, which is kind of hilarious.