If you are following the news on the Steam page, Voice of Flowers took part in a couple of Steam events and the demo was available on Steam and received some special updates. Now that the events are finished, the demo is back on itch.io and all the new content was just uploaded here. That includes the achievements, which use a custom system in the itch.io version.

You can read more info about the future plans for the game here: https://store.steampowered.com/news/app/2609560/view/4130435365863954612

Changelog for the itch.io update (it includes multiple versions):

v.0.1.6

• Slightly decreased stomp bounce height.
• Fixed turning dust effect sometimes appearing in air.
• Fixed usability of audio sliders with high refresh rate.
• Fixed stomp damage element not showing when no shoes are equipped.
• Fixed throw distance stability being dependent on FPS.

v.0.1.5

• Added game customization options.
• Speedrun Mode: Displays a persistent timer that counts active game time and skips dialogues.
• Disable Minimap: Disables in-game minimap.
• Disable Help Prompts: Disables help tooltips and notifications.
• Disable Quest Prompts: Unused in demo :P
• Removed some too obvious debug option.
• Reworked how time is counted internally to make it more accurate. As a side-effect, time is also counted while in game menu.
• Fixed one spot where the character can get awkwardly stuck.

v.0.1.4

• Starting the game will now create a save file immediately.
• Some Controls options are now hidden.
• Improved some enemy collision shapes.
• Tweaked physics to make it easier to fit into passages when falling.
• Made Batflier swoop slightly slower.
• Tweaked Cacrawl hole traps.
• Tweaked placement of some enemies.
• Updated icon for Crab Shell (it will be revised again in the future).
• Updated Rose Charger bestiary preview.
• Bestiary can be now scrolled by pages, using left and right keys.
• Improved "DEMO" in title screen.
• Fixed map optimization bug.
• Fixed abrupt animation when exiting save point.
• Fixed physics stability in case of lower FPS values.
• Fixed starter equipment having NEW indicator.
• Fixed some Controls options displaying incorrectly when edited.
• Fixed some tiles not having collision.

v.0.1.3

• Added 12 demo-exclusive achievements.
• Added inventory sorting.
• Improved item drop RNG to be less biased.
• Changed appearance of item blocks.
• Last equipped items are now moved to top of the list.
• Fixed starter items disappearing after unequipping them.
• Fixed snake enemy pixel glitches.