Guild Wars 2

I’m probably being stupid, but I cannot figure out if you need only the one key or if once you use one it goes away and you need more to open the chests. I haven’t gotten to that part of the dungeon yet and would like to be prepared if I need multiple.

You need 5 keys total (across your entire group). Opening a chest uses a key.

It is used up once you open a chest. So to get all 5 chests open in 1 run, you’d need 5 × 5 key parts = 25

Thanks guys I thought that was it, but usually those types of things say consumable, so I was a bit confused xD

I think consumable means you double-click to use. These you use in a dialogue window that pops up (like keys in gw1, if you played that).