Cosmic Spider-Man's Enigma Force Blast Power says: Cosmic Spider-Man can use Force Blast. If he does so, he can then use Ranged Combat Expert as a free action targeting the same character.
Whirlwind says:When the character uses Force Blast, the result of the six-sided die roll can be split among multiple target adjacent opposing characters. The targets are otherwise affected normally by Force Blast.

So would Cosmic Spider-Man get to attack Multiple people if he force blasted multiple people.

i believe it has been ruled that he can make multiple attacks. this may have changed recently though?

Yes.

(from this "Final Word" thread)

Ouch, that's pretty brutal. Espesially if he's on his 5 damage click.

That probably has changed.

Page 8: "A character may not activate the same game effect twice in one turn with free actions, unless the game effect indicates otherwise."

I see the date of the FW and note that it is from before the new rulebook.

I'll check.

booooo hisssss
i really hope it hasn't. but if it has, meh.

Ah, I didn't check the date, and consequently thought it somehow overruled the new "free action" rules.

No, it should be changed.

This answers my question in the Elite thread.

I just answered that question there right before checking this thread.