I did not find an acorn. I actually wasn't able to get past the trap I mentioned, because each time I dropped down into it, I was immediately killed by the two goblins with knives. Is the acorn is before or after that point?
The acorn is before. In fact right before also with a hidden wall. It only gives you a little regeneration though so it's not gonna help against two goblins. On that note, you can jump over the gap if you know where to jump.