by harflimon » Mon Nov 19, 2012 9:38 am
I don't know about the wooden ones, presumably they are easier to destroy, but I built my stonewall incorrectly and it wasn't until I had 35 phelgm that I started to see any real progress when attempting to destroy it. And it was only when I had full phelgm that it would do anything, after the first couple strikes I would have to eat something to get my phelgm back up to max. Even with that it was slow going, took awhile.
If I was to hazard a guess I'd say you'd probably need around 25 phelgm before it would even be worthwhile to try.