I'm a level fourteen in Brink and, whilst I really enjoy the game overall, I hate the challenges which unlock weapon attachments. I'd prefer a levelling system like CoD uses for weapons and that. I find these challenges ridiculously hard to, or is it just me? Engineer is never a strong class for me, so escort just seems impossible...

Yes, the challenges get much harder the higher level you are.

The best way to complete them is at a lower level. However, I was in the same boat as you, a high level trying to complete the challenges.

It took me a bunch of tries to get the 3 star ones

Oh, wish I had beaten them at a lower level then.

This has been covered! Jus start a new low level character, do the challenges & then delete the character. You still get the achivement & the weapon upgrades. Or dont delete character & spice up your game with a diff way to play.

Try and try again. It took me many tries to get Be More Objective 2, but I still completed it. To show you have real skill, get to level 20, then complete them- that's what I did.

In the words of the Engie:
"Take it like a MAN!"

Or wimp out & create a new character. Wimp out for the win lol

Too Easy

Yes they are hard. I have not bothered trying to go for 3 star simply because I have played enough games to rage me out already.

Start a new character edit the weopasn to your liking start challenges when your done you should only be about level 3 or 4 and all your guns/gun attachments will be unlocked for everyone