CrossFire-Challenge mode

I know that discussing other CF versions here isn't allowed. But for all you who wanted there to be a BOT MODE or COMPUTER MODE or whatever...
It's there.
It has been released.
You take on BOTS zombies plus there are bosses and... WELL IT IS JUST COOL. I DIDN?T EXPECT IT TO BE SO AWESOME, BUT IT IS.
I thought it's gonna suck. -.-