I am considering buying the game, but I'm not sure I just would like to know the opinion of people who already have this game.

If anything, go for the 2nd assault heroes and only if you have someone on your friends list who can play it with you.

Both of them are a lot of fun, but much better if you have someone to play with.  I can't remember if they're $5 or $8, but either way they're worth it.

I have the first one, I think its pretty fun.

Three words: GET IT!