Why do we have to unlock guns and attachments?

You are wrong.

I don't exactly remember how BC2 was but in BF 3+ you always had to unlock the guns and the attachements through kills with said guns.

In BF4 it bacame even worse with the Battlepack crap.

So in this part 2042 is the same as before...

You've always had to unlock attachments except this time, the guns are so bad in base form (except smgs) that it's a real pain in the * to actually level anything up.  My first few games I could barely get 3-5 kills with any AR weapon because I was getting melted by Level 60 no-lifer, basement dwelling, streamer sweattard playing 18 hours+ per day.  I don't remember them sucking so badly in BF4, BF3, BC2. (I didn't like BF1 or BFV because I don't like WWI/WWII games but those sucked hard also until you levelled them up)

Unlocking weapons by progressing in your level/class has been part of Battlefield games at least since BC2...

And I don't see any problem here.

BF3 did it best, always something to chase, weather it was a new tag for loads of kills, new weapon, new attachment, that game always had something to work for, and none of it behind annoying assignments (well apart from some dlc stuff)

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@yungblockburna wrote:
@NiCeDiCe90the attachments but not the actual GUNS

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You had to unlock the weapons by level up or by score for the specific class.

The DLC weapons were unlocked by assignments.