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-# Hollow Knight Completion Check
+# Hollow Knight: Analyze Save Completion Online Tool
 
-> Tool for checking what is left for full 112% completion percentage in the game Hollow Knight.
+> Analyze your saves. See precisely what you missed and where. See Completion %, locations (also Shards/Fragments), costs. I even designed spoiler-free hints based on your progress, if you are completely lost.
 
 ## General info
 
+Hollow Knight doesn't have a game completion list. There is no way to easily check what specific things someone forgot to do for full 112% Game Completion. So I wrote a tool for that. It can also give an optional hint if stuck, based on the in-game progress.
+
+Inspirations: discussions on the forum, KayDeeTee and bloodorca's Save Editors, programming learning, Elderbug.
+
+If this is your first playthrough and you feel completely lost, I will give you a very slight optional hint which should point you in the right direction (no major spoilers). Hidden by default.
+
+I will show you all individual Mask Shards and Vessel Fragments as well as locations and costs of every item on the list. Locations/costs are hidden by default if you don't want spoilers.
+
+## How to use
+
+* Use bloodorca's amazing [Online Save File Editor](https://bloodorca.github.io/hollow/) to decode your Hollow Knight user*.dat save file into text.
+
+* **CTRL+A** (Select All) inside the text box after decoding the save. **CTRL+C** (Copy) to copy the whole contents inside the text box. Be careful not to copy the whole webpage! Only the text inside the text box.
+
+* **CTRL+V** (Paste) the text data inside the text box on the [Tool's webpage](http://reznortech.rf.gd/hollow-knight-completion/).
+
+* Click **"Analyze Text"**. If the copy-pasted data was correct, you will see your Completion %, Play Time, and a whole list of things you have done (✅) or not yet done (❌).
+
+## Hollow Knight Save game locations
+
+#### Windows
+`%USERPROFILE%\AppData\LocalLow\Team Cherry\Hollow Knight\`
+
+#### Linux
+`~/.config/unity3d/Team Cherry/Hollow Knight/`
+
+#### macOS
+`~/Library/Application Support/unity.Team Cherry.Hollow Knight/`
+
+#### Filenames
+
+**user*.dat** — main save file. Where * is a number between 1 and 4, and it is the appropriate save slot inside the game.
+**user*.dat.bakX** — backup save files. Where X is a number in ascending order meaning how many backups were made during the whole playthrough of that save. The higher the number, the more recent the backup. There are usually 3 save backups at one time, older backups are deleted.
+
+## Support and feedback
+
+All feedback/problems/wrong data are appreciated. Feel free to write them in the [Steam Discussion](https://steamcommunity.com/sharedfiles/filedetails/?id=2209910193) thread for the Tool.
+
+Currently only things that are necessary for Game Completion % achievements are shown. The tool doesn't show all the optional things, bosses, challenges, relics found, geo caches opened etc. that are not required for completion %.
+
+If you like the tool and want it developed further with more functions, consider supporting on [PayPal](https://www.paypal.me/ReznoRMichael).
+
 ## Version History
 
-## Technologies
+* 2020-09-13:
+  — changed theme to a more Hollow k[N]ight atmosphere.
+  — fixed switched Dash Slash and Great Slash check.
+* 2020-09-06:
+  — Introduced: **Optional Hints** - if this is your first playthrough and you feel completely lost, analyze your save, and I will give you a small hint where you can investigate next (based on your progress in the game). Inspired by Elderbug (and people on the forums asking where to go next).
+  — Introduced: **Show/Hide Locations and Hints** - Now hidden by default if you don't like spoilers! Just click the checkboxes to instantly toggle their visibility.
+* 2020-09-02:
+  — Gruz Mother and Brooding Mawlek check should work now even for extremely rare cases
+  — Showing all Completion Data by default on page load
+* 2020-08-30:
+  — Added all locations and costs of all individual items
+  — Fixed Watcher Knights incorrect data check, should be okay now
+  — Showing total percentage of all categories (not calculated)
+  — Cosmetic improvements
+* 2020-08-29:
+  — All individual 16 Mask Shards and 9 Vessel Fragments as well as their locations are shown now as requested
+  — Fixed Gruz Mother incorrect data check, should be okay now
+  — Added save's Play Time
+
+## Using
 
-* HTML5/CSS
 * JavaScript
+* HTML5/CSS
 * JSON
+* Fontello
+* Google Fonts
 
 ## Contact
 
-Written by [ReznoRMichael](https://github.com/ReznoRMichael)
+Written and created by [ReznoRMichael](https://github.com/ReznoRMichael)