Reposting this from /r/Gemcraft. These are a collection of the discovered secrets in Gemcraft: Chasing Shadows. Some of this may be slightly inaccurate, but hopefully compiling all the knowledge here will get us closer to the final answer.
Grey Trees
ReaperGuy on the AG forums figured out GreyTrees, and Seberoth also identified some extra codes. It was discovered that the outside corner squares of the map (zoom out to make them easier to see) are clickable. Various codes inputted will do changes to the game, but so far it's only cosmetic aside from the almost-useless Gift Gems.
The codes are entered with the following scheme (as if they're four corners of a number pad): Southwest = 1 Southeast = 3 Northwest = 7 Northeast = 9
The codes discovered so far are: 11331791 - Grey Trees - To get the achievement, finish any field with this set. 11319773 - Black Orb 13371337 - Spinning tower shots 11379197 - Mossy towers 97713791 - Mossy amplifiers 77919713 - Heavy rain 79797919 - Heavy snow 77311973 - Gift gems 11799397 - Dark monsters 11111111 or any 8 digits of the same number - Mods reset
Assuming up to 8 digits in any given code, there are still over 65k codes to try. I don't think brute forcing these will work. Again, all credit for this discovery goes to ReaperGuy and Seberoth on the AG forums.
Compass
The basic gist is that you need to set all compass pieces to tier 5 and beat the final one that drops the field marker. Rinse and repeat 11 times for talismans and field markers. The third reward is a bugged field marker that prevents the round from finishing. Just manually end it and start on the next compass set. You'll know you have completed them all when the gems no longer show up in the loading screen.
The compasses themselves correspond to the gem tiers you see on the loading screen of compass levels. Teardrop is tier 1, triangle is tier 2, square is tier 3, a "U" shape is tier 4, and an "X" shape is tier 5. Every time the compass tiers reset, the compass correspondences are set to a random orientation, which always follows a pattern of 1-2-3-4-5-4-3-2.
Let me be perfectly clear: The directions on the compass don't matter for any tutorial/description, because where Tier 5 is pointing is random each time you do things such as reload the game, change your skills, or beat a level.
The compass levels, in left-to-right order, are C2, E3, J2, K2, O3, U4, and X7. The easiest level to finish at is E3, with only 24 waves at untraited Looming.
Here is my basic algorithm for setting a compass based upon the gem at the loading screen: Tier 1 - Turn 4 times. Done. Tier 2 - Turn 3 times. Recheck. Tier 3 - Turn 2 times. Recheck. Tier 4 - Turn 7 times. Recheck. Tier 5 - Done (duh).
With this algorithm, tier 2 and 4 always become a tier 3 or 5. Tier 3 always becomes a tier 1 or 5.
The rewards for completion of a certain amount of cycles is as follows: 1 - Field D6 3 - Bugged Field Marker (perhaps supposed to be N7?) 5 - Field O4 (Already acquired through normal progression) 7 - Field P6 9 - Field Q7 11 - Field X6 2, 4, 6, 8, 10th times: Talisman fragments of ascending quality
Missing Fields
This list is FAR from complete or entirely accurate. These are just the notes I have from field markers I have acquired or seen from other sources.
A6 - Complete A4 on Glaring B6 - Complete the achievement "Still Alive B1" D6, P6, Q7, X6 - See compass explanaition above. Y4 (->Y5->Y6) - Complete all waves on X5 without charging up the gem. G4 - Complete the rest of Hex G on Haunted difficulty L5 - Complete L1, L2, and maybe L4 on Haunted difficulty
I am trying to figure out if there is a way to make loading the levels slower. I can't actually see the compass-related gems most of the time because the level loads so fast they are not visible.
@Surrealfunfair. we are talking about charging the gem of eternity/summoning that is in certain fields. you charge it by freezing/cursing monsters near the charging nodes. most fields with one of these gems can be beating by charging these gems or if you are skilled by not charging them.
Anyone tried beating Y6 before visiting X5? So far these games have had kinda only bad endings... think about it... zero... bad things happened... 1 bad things happened, Lab did kinda end happilly but... well spoilers clearly happened. and this one... bad things happened.... but... maybe, just maybe... this one miiiight be different if you visit Y6 before X5?
How exactly can you get Y4 and up? I just lose when i dont charge the gem on X5, had y1-y3 before i finished X5. Short video or short explanation would be awesome. thanks
How do i get Y4 5 and 6... I finished X5, i tried finishing it without charging the gem at least 2 times, each time i lost because i "didnt charge it in time".
I finished X5, at looming difficulty and no traits, the first time I tried playing that level by charging the gem up around wave 27, and thereby unlocked field Y4. I myself was actually thinking one would always get field Y4 upon beating X5.
I wouldn't know what the real conditions for unlocking Y4 are, but they may not be related to having to finish the field without charging.
I got G4 after completing G5 on haunted difficulty. The only other level I had completed on haunted was G6, and given the above comments, it's likely only G5 is required.
I got L5 after completing L2 on haunted, already having completed L1 on haunted. Could someone try completing L2 first to confirm it's the only required level?
