One thing I haven't seen mentioned in this thread amongst the repeated "walking works", "no it doesn't" arguing is - if you walk through a bush or some overgrowth, you will aggro anything that is close by.

I, myself, am 77/87 on these... haven't been playing all that long, and my highest is a Lv.35 PGL... I don't have Decoy and I don't have Stoneskin.

Currently missing...

Coerthas:

Wyrmking's Perch: Didn't attempt yet...

Twin Pools: Didn't attempt yet...

The Lance: Didn't attempt yet...

Feathegorge: Attempted a few times, can't get past the bats in the cave... I should probably try walking instead of choco-blitzing it, but I think Toads are sight... and it's not possible to see which way the toads in the tunnel are facing until you've committed to blitzing by.

Fellwood: Tried once, died to a Hippogryph hiding behind a bush. Put off further attempts due to low anima/distance.

Oakwood: Tried once, got cornered between aggro'd eyes and efts... didn't know what to expect... maybe I can get lucky with eyes facing the walls...

Lasthold: Horrible, horrible... The Pugot gauntlet just beyond the gnat/malboro clearing felt like a kick in the balls. I made it past the clearing with ease, but there was a Pugot right around the corner, I never saw coming.

Lichenweed: Even worse... the mob layout is just brutal... you have raptors, which you can avoid entirely if you're patient enough, but boars that are going to at best give chase. Once you have a boar chasing you, you take a few strides forward and see a Drake and an Eft... your only option is to get as close as possible to the drake, dismount and start walking - and pray the boar returns to it's territory, which it won't. All this while being only about halfway there. Oh, and there's the clearing of Level ~50 boars before you even get to the 70+ stuff, which are enough to kill a Lv.35... and like to all cluster at the corner exit to Lichenweed.

Lynxpelt Patch: Haven't tried it yet, but it looks downright awful.

Snakemolt: Tried it once, from the south, and died trying to walk past a Drake and a Pugot. Couldn't walk by fast enough without the Pugot turning and seeing me. Didn't get close, haven't reattempted since.

The majority of the other ones were all pretty easy... Verdant Drop was a pain because of 2 specific raptors (one hid inside a cluster of Diremites, and revealed itself once I got close - the other sat RIGHT ON TOP of the node, for about 5 minutes).... and Larkscall (didn't even die attempting Larkscall, but I was certain I was going to several times...)