Is it allowed when player 1 collects a key and then player 2 gets the key and uses it in the run?

We defined these rules which we think is balanced enough for a good coop challenge run:

• Monsters: Bring 'Em On
• Weapons: Are Permanent
• Items: Respawn/Respawn with Markers
• Friendly Fire: Off
• Player Keys: Kept on Respawn
• V1.0X Weapons Balance: Off

We dont allow shared keys because it simplifies the run too much.

you think friendly fire off is good idea?

we thought we can mess with some team boosts just like in quake without any penalties, but we couldn't find any, other than that the only risk would be killing your teammate when fighting a boss imo