An enjoyable platformer that looks really cute. It has 1 grindy achievement and no missable achievements. It takes around 11h to complete the game.
Approximate amount of time to 100%: 11 hours
Estimated achievement difficulty: 5/10
Minimum number of playthroughs needed: 1
Is there a good guide available: Yes for collecting the flowers there is one here
Multiplayer achievements: No
Missable achievements: No
Grinding Achievements: Yes, collecting all the flowers. See the guide in the link above
DLC-Only achievements: No
Time-gated achievements: No
RNG-achievements: No
Does difficulty affect achievements: No
Unobtainable/glitched achievements: No
Directly started playing this game after I got it from the Humble monthly. I had problems with one puzzle, but otherwise no problems at all. Enjoyed this game!
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Developer: 
This review is written on 9 October 2017 based on the Steam version which has 21 achievement when I write this review. The information can be outdated when developers add or remove achievements.