Roxanne Lalliere has been kidnapped by Johan Elting, you've found out from the governor of Puerto la Cruz that she's being held in the fort, and now you have to kill a lot of soldiers including the fort commander so that you can steal his key to get into the lower level to release Roxanne.
On a couple of occasions when I tried this, the commander's body was under a pile of soldiers' bodies. There seems to be a bug whereby, if lots of corpses are stacked like this, the loot boxes associated with them do not always all show up, so I couldn't find the commander's body and could not steal the keys.
See also:
Difficulty balancing?
... in which someone else appears to have had the same problem.
Also, it is possible that a player might have disabled corpse looting in the "Options" menu, in which case it will be impossible to get the key.
Suggestion: at case "dentro_forte", instead of giving the key to "Fort Captain", set up a quest case which gives you the key automatically, triggered by the death of "Fort Captain". That means you don't need to dig through a pile of bodies in the hope of finding the commander, and you can still continue if you disabled corpse looting.
On a couple of occasions when I tried this, the commander's body was under a pile of soldiers' bodies. There seems to be a bug whereby, if lots of corpses are stacked like this, the loot boxes associated with them do not always all show up, so I couldn't find the commander's body and could not steal the keys.
See also:
Difficulty balancing?
... in which someone else appears to have had the same problem.
Also, it is possible that a player might have disabled corpse looting in the "Options" menu, in which case it will be impossible to get the key.
Suggestion: at case "dentro_forte", instead of giving the key to "Fort Captain", set up a quest case which gives you the key automatically, triggered by the death of "Fort Captain". That means you don't need to dig through a pile of bodies in the hope of finding the commander, and you can still continue if you disabled corpse looting.