Anything You Can Do... bugged?

[Roloca]

Okay, so I'm one of the lucky bastards, who can play this game. Not running perfectly okay, but it's fine. So I asked my friend to call me out on something. It was parashootin. He had a score of 5, I had a score of 4. I went to a base, and killed 6 enemies with the RPG. I exited, but the achievement didn't pop. Is it bugged, or am I doing something wrong? Oh, maybe I have to use the same guns as he did?

[Erebus]

Some of the achieves seem to not trigger at times. Not sure if finnicky or slightly broken.

[GLiTcHeD]

Yeah, don't think the RPG's count and you might have to use a gun.

At least, I get popups when I use a gun but not when I use rockets/grenades.

[Roloca]

NVM, I found out the issue. When you get called out, you get a score to beat and the weapon. If you don't use the right weapon, you can have 2 or 3 times more than the score of your challenger, it won't count. You have to use the exact same gun.