Like previous updates, this update is only available to testers to ensure they can try the newest features. Nevertheless, I am quite happy with the progress I have made so far, and I believe some of the changes made in this update will help me in setting up more difficult features down the road, like control remapping.

Features:

• Integrate Steam Rich Presence functionality (your friends can now see in their friends list what level you're playing).
• Space can now be used to select a level in the level selection scene.
• Add setting to enable/disable vibrations (i.e. haptic feedback).
• Vibrations now only occur (even if enabled) under the condition that the last used input device was a controller.
• Add vibrations to the intro cutscene, level selection scene, and when making an invalid move.
• Undo/Redo UI buttons now display the according key/button glyphs you need to press, and also change depending on the input device you use (this change also provided the groundwork in setting up control remapping, there is a button for that in the settings, but it's not doing anything yet. More on that in future updates)
• Update ice sprites.
• Add movement tutorial to the first level (The Beginning 1-1) using appropriate glyphs.
• Add a tutorial to the second level (A New Obstacle 1-2), indicating which rocks should be moved to the goal.
• Add undo/redo tutorial to the third level (Corridor 1-3) using appropriate glyphs.
• Levels now have in addition to their star requirements special 'Seal of Approval' requirements. These Seal of Approval requirements represent the (as far as I am aware) perfect solution, the 3 star requirements will thus become easier. The achievements will only require you to get all stars, not the Seal of Approval on each level. (but you're cool if you do).
• In-level UI now displays a special symbol if you got the Seal of Approval on steps or pushes.
• Statistics now show how many levels you completed with all stars, and how many levels you completed with the Seal of Approval.

Level Changes:

• Add new Cocytus levels: Twin Stream (3-9), Shore (3-10), Theta (3-11).
• Add new Phlegethon levels: Burning (4-1, old Burning now renamed to Replenish 4-2), Drain (4-7).
• Add new Lethe levels: Vicious Circle (5-3), Holes (5-4).
• Simplify level Spark (4-4).
• Update several star requirements, making 3 stars generally easier, and instead setting more difficult 'Seal of Approval' requirements.
• Rename several levels.
• Fix missing floor tiles in several levels.
• Add decorations to several levels.

Maintenance:

• Update to Godot 4.0.2.

Bugfixes and Other Small Improvements:

• Fix bug where level selection circle was not being made available after unlocking it.
• Fix bug where Pause menu did not open when pressing the according UI button in a level.
• Update Credits.
• Reduce volume of the music in the intro cutscene (it should now be equally loud as other music pieces in the game).
• Update achievement description to be less ambiguous.