The Commander, on 15 February 2014 - 09:58 AM, said:
2. You can pick up any ammo (normal settings do not allow it to respawn)
It's a bit more complicated. Ammo doesn't respawn, but health and inventory items do.
You can only pick up one type of weapon once per level, but weapons stay for other players. However you can pick up the same weapon again when another map level starts. None of this apply to weapons dropped by enemies.
The Commander, on 15 February 2014 - 09:58 AM, said:
This is a major game breaker that I have brought up before, some large user maps make use of the same colour key card, so I can just go back up pick up the same card from before without getting the card where I am intended to get it.
What is meant to happen is that the player who picks it up (possibly all players get this card at this point, MetH can you confirm this?) keeps this card even if they die till it is used in the key slot, then it is removed from the player.
A key card is still in the player possession after his death. But this may become a problem if the played quits the game.