Achievment trouble in LEGO Batman

I'm having some problems with the achievments in LEGO Batman.

Most of the problems are just wondering how in the world they have intended some of those achievments to be possible, but there is one thing that really annoys me:

Anyone else notice that you won't actually get the achievments if you are using the second player?

Just played through the Wayne Manor Bonus level (which is horribly bad and annoying, btw), and did not get the achievment, because player one was dropped out when the last stud was collected. So I have to do it again! Huzza!

And have anyone got the "smash all the cars in the robot level"-achievment yet? If so, how did you do it?

Can you give me the name of the level?

There are like three stages with huge robots in them, and I've tried smashing all the cars in all of them, but can't seem to get the achievment. So the stage name would really help.

You can get the achievements if the second player is logged in, but if you want the achievement you need to be in play as player 1.

I am having problems with the streetlamps achievement and the most dangerous man in gotham.

when it comes to the streetlamps, I would recommend freeplaying the level using someone with a gun (joker, harley, penguin and gordon all have guns, amongst others) or use explosives (Demolition suit for batman/batgirl or penguin).

I also find cars are great for knocking down stuff :)

Hope this helps!

As to the most dangerous man on earth, I think you get that as part of playing through the game, granted that you actually play batman when you beat the bosses.

If that doesn't work, you could try having player 2 be the different bad guys you have to beat, and then beat each of them once.

But I seem to recall that I got this achievment as part of the story.