-Receive 2 cards per mission (p4)
You probably are referring to doomtrooper cards. We´ve been playing so that each doomtrooper team gets 2 doomtrooper cards for each mission like you said. And it seems reasonable amount of them.
But where does it actually say how many doomtroopers cards you get? Not atleast at page 4. In page 14 there´s an explonation how doomtrooper cards work but it doesn´t say anything about how many of them you should have.
I´ve scanned through rulebook over and over again, but I can´t find anywhere mention about this.