Level 3 was much quicker, took about 10 minutes as it's only a small level.
![](https://i.imgur.com/jbGr6Bh.png)
I'm fairly sure there's a terrain piece missing from l2_beach. It can be made from an existing piece by placing an erasing piece, this one here:
The one on the left exists in l2_beach | The one on the right can be created by placing an erasing piece and then groupingIt's not a major issue, but if I run into it again I might just go ahead and add the piece.