I've 186 hours in Killing Floor 1.
2 hours in Killing Floor 2.
First impressions.
1) Open your console and type "fov 110" then press enter. Default FOV is somewhat claustrophobic, especially compared to the first game.
2) Do what this guy said in the config to turn off mouse smoothing
PSA: to remove the goddamn mouse smoothing + acceleration Unreal Engine 3 has on by default:
\killingfloor2\KFGame\Config\DefaultInput.ini
\killingfloor2\Engine\Config\BaseInput.ini
I've been playing the game on hard mode.
Game is much more mobile than KF1. You can outrun all Zeds as long as you don't get cut off by the Zed spawning system. Zeds spawn everywhere, including around the corner and behind doorways, but generally you have to be moving in this game. Camping was
the strategy in KF1.
Hitboxes are far more consistently triggered than the first game, and this appears to be because the hitboxes are placed more accurately. In Killing Floor 1, for a good long while, the scrake's headshot hitbox was actually slightly off-center, leading to some unusual techniques for killing them.
Perks level slow as fuck, and in an even more punctuated way than KF1, possibly unintentionally. The perk tree is separated by increments of 5 levels and it takes a long god damn time to reach them. The tier 2 talent for commando is literally +50% magazine capacity.
Sirens do maybe 5-10 hit points of damage per shriek on hard mode compared to somewhere around 40 health per shriek in suicidal in Killing Floor. They're more of a grenade shield than the devastating slaughterer that they were in the first game. In fact, most all Zeds hit much more softly now. You now only really get fucked if you get caught in a corner.
Animations, particularly Zed anims, are a gigantic improvement. Animations are much smoother and consequently it is easier to place shots against Zeds.
The removal of the sharpshooter class is huge and a big reason that camping is dead. In KF1, sharpshooters were used to completely defang fleshpounds in a single headshot. I believe sharpshooter was removed as a class because they defused the most powerful zeds in the game and they felt necessary for high level play.
Performance and graphics are excellent. Gun handling feels smooth and precise when hipshooting and when ADS. The game is clean and playable and therefore it should be easy to introduce to someone who hasn't played it before. Eminently playable. It makes me feel why RO2 still feels wrong.