How do guild quests work

Did they change guild quests? Because there was a mine damage quest and I don't have mines, but it said I did 44k damage with mines even though I don't have mines.

 

You can accept and use the weapon u want but if you use mines, you contribution will be x10. (Dmg deal using mines of couse)

 

I think I didn't explain well enough, the game thinks I did damage with mine even though I didn't use mines.

 

Well, your lucky then.

 

Those quests no longer need you to use a specific weapon, now using that specific weapon provides a x10 boost in contribution instead. You can still contribute with any weapon now.