The Magic Circle: Gold Edition

To get this achievement you need to interact with everything possible and I mean everything. You have to find all the Change Logs (except those noted), Status Upgrades, Life Upgrades, Audio Commentary, undelete all deleted content and Edit all Creatures. With the creatures, you have to edit every single creature, not just one of each species. I found the list below on the Steam site and it is very accurate except for the quantity of creatures as this list adds up to 81, but the in game stats show only 79. By hitting the menu button and looking to the left you can see the status of your collectables to determine what set you still need, but it will not give you a breakdown of which exact ones you have.

Don't sweat it if you don't have everything before tackling the Sky bastard and starting E4. After you finish the game, you can return to the Overworld from the Desktop and have access to all of the areas again.

Here is the list and some locations for most items:
Credit goes to Truffleh0g from the Steam Community Forum

Change Logs
Overworld Change Logs

Root Ladder?- Behind First Crack, on top of the rock with a root wrapped around it
Deleted Bridge- on bridge
Dead End- ledge under path up and to the left of 1st Howler Cave
Confusing Forest- across tower gap, in trees
Misplaced Volumes- Misplaced Fire Volume entrance
Empty Flamer- Cellar under Hiver Ruins
Hiver Queen- Entrance to Hiver Queen lair
This Way- Sky Bstard Overlook
Emergency Evac- Emergency Evacuation Bay


Additional Change Logs (not needed for achievement)

Talk to the Wall- Left along wall after Star Father statue, but before Elemental gates
Nobody Looks Up - Entrance to elemental gates area
Disclaimer- E4 demo map
Innocent Enough- E4 demo map

Status Upgrades

Cave up and to the left of the 1st Howler Cave
Under tower to the left
Under tower to the right
Village firepit (after undeleting Pro Tunnel)
Left of Hibernetics Room entrance
Barracks A entrance (behind electric barrier)
Small Howler cave to the left on the way to Nadir's prison
Cell up and to the left of Mushroom Wizard's Cell
Ledge across Misplaced Fire Volume, where the key appears (Float or Fly)
Mushroom Wizard's Cell
Under Shuttle Bay Lift
Across Shuttle Bay Lift in a Higher Shuttle (fly over)
Tri-crossroad between Turbo Lift and Emergency Evac (behind electric barrier)
Xeno Labs, Cell B (teleport)
Back of Volcano Cave, after Securitron Space entrance
Broken Tower closest to Volcano (it has no roof)
Left tunnel leading under Hiver Ruins
Cellar under Hiver Ruins, left of Change Log
On top of the wall where Hiver Ruins Crack is
Middle of the room behind Securitron
Lowest spoke in the Star Gate behind the Sky Bstard Overlook

Life Upgrades
Life Upgrades are indicated by a circle of blue arrows pointing towards the upgrade

In the back of the Deleted Cave
Under the Tower
Mushroom Wizard's Cell
Cell above Mushroom Wizard's Cell (look up and see which one has a blue marks underneath and fly to the opening)
Across Lava River in the mouth of the Volcano Cave
Cellar under Hiver Ruins

Audio Commentary
Note: Aside from the three area-specific Ish comments, the audio logs will play in the same order.
Creator Commentary

Ten Years...- Right of Limina Operations entrance, behind electric barrier
The Text Version...- Left of Barrack A
An Immense Debt- Space entrance on the path up and to the left of 1st Howler cave
Darkest Hour- Backdoor Nadir's Prison
New Blood- Tri-crossroad between Turbo Lift and Emergency Evac, behind electric barrier
The Void- Left of Limina Operations entrance, behind electric barrier
The End In Sight- Left room of Tractor Beam Hangar, right across right entrance
HR Mediation I- Whirlybird Hangar, top, left ramp
HR Mediation II- Up Teleportation Bay lift
HR Mediation III- On Sky Bstard Overlook platform, to the left (fly)


Ish and Coda

Trial by Fire- up and to the left of 1st Howler cave
Her Heads All Smiled- Small Howler Cave to the left near Nadir's Prison
Insert Magic Here- Cell up and to the left of Mushroom Wizard's Prison Cell
Most Anticipated- Mushroom Wizard's Cell
Boundaries- Cellar under Hiver Ruins, left of Change Log
Headcanon Part I- Wall Above Hiver Ruins Crack
Headcanon Part II- Ledge across Misplaced Fire Volume
Priorities- broken tower closest to the Volcano (no roof)

Ish and Maze

Fun With Subtext- Firepit in Village (after undeleting Pro Tunnel)

Maze and Coda

Maze's End- under tower, to the left
20 GOTO 10- under tower, to the right
Losing- left tunnel, left of Hiver Ruin Crack


Ish Hangar Comment

Do They Gaze Back?- Shuttle Hangar Bay up the elevator

Ish Tractor Comment

Forces Weak and Strong- Right room of Tractor Beam Hangar (where 3rd teleport is)

Ish Solo Diary

The Speech- Back of the Volcano Cave, after Securitron Space Entrance

Edited Creatures
Notes:
The Hellhound is only available after getting the Quality Assurance achievement (finding all the Leif Troper notes).

17x Hiver
10x Corpse
9x Flamer
8x Rock
8x Mushroom
5x Howler
4x Juggo
3x Cyber-Rat
3x Whirly Bird
3x Teleport Pad
1x DoorBot
1x Key
1x Tractor Bot
1x Hiver Queen
1x Mushroom Wizard (Group Think on Mushrooms)
1x Sentinel
1x Cerebra
1x Hatchworm
1x Securitron
1x Hellhound (Group Think on Howlers)
1x SkyBstard

Undeleted Items
2 Pro Heads by tree, one touching it, one down below if you jump to the right near where you start
1 Deleted Cave Entrance on start island
1 Pro Head in Cave
1 Rocks Near first crack
1 Ghost Bridge
1 Pro Head in area above starfather statue
2 Pro heads near the entrance to the forest
1 Pro head in the crumbling tower
2 Pro heads in the upper forest area
1 Village cave entrance
1 Pro head outside village fence
3 Space dungeon sections

There are 3 pro heads that introduce audio logs, but you can only fill one (the other two are auto awarded) they are:
1 In the cave above the first howler if you go left at the starfather statue
2 In the forest, one on either side of the big tower

Good luck!

For anyone missing Edited Creatures, like I was, it's probably a hiver(s). To find them, I teleported to the First Crack, and spawned ALL the creatures there (pull up the map and click on every single one). Then I walked around the world knowing that *anything* I found would be a new creature, and it made them much easier to spot. After getting down to just two missing creatures, I counted all the hivers I had (there should be 17) and knew that those were what I was missing. They ended up just being out in the open by the Hiver crack (dead, so they were hard to see).

Another strategy I read is to use "group think" on a hiver, then walk around the map and hopefully you'll see a message saying, "Hiver is now in group think range" or something like that, and you'll know you're close to one.

If you're missing any other items (audio logs, commentary, etc.) just look in the menu to see exactly what you're missing (e.g., Maze and Coda audio log) and use the excellent walkthrough to find it:

The Magic Circle: Gold Edition Walkthrough

The creatures are the biggest pain since there are so many of them, and they could be anywhere.