is it only me or challenges are really difficult?

[persoiranian]

and another thing,just now i completed the last challenge(killing the doctors) and that was surprisingly so easy.i thought the last challenge is the most difficult one,same as the original necrovision!!

[Nokturnal]

Well i've only tried the first challenge, the jumping/flying zombies one, but i found it quite easy.
I think i actually finished it with a minute or two to spare. But i do remember the challenges from the original, and as you say some were pretty damn hard - So i expect to find some difficult ones in this too.

[jiminator]

I really wish we had another serious uncle sam challenge. now that was fun.

[persoiranian]

serious uncle sam the challenge which we had to kill 500 enemies,yeah that was fun

[Divebomb]

hehehe. serious 500 challenge gives me cramps. I deathgrip the entire time while playing. so I actually still haven't been able to complete it. not tried any of the lost company challenges yet though, nice to hear they're hard