Here is the full list of all 30 Haven achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Choose not to sever the flow bridge
Finish the game with 3 KO or less.
Try on the flower boots
Choose to sever the flow bridge
Clean up the rust on every fragment
Finish repairing the Nest
Beat the Lorudo
Lose a game of strip-a-bobble
Taste every dish
Launch a max-power assistance
Launch a max-power double-attack
Taste the hygrocybe rubescens
Getting handsy under the waterfalls
Reach the heights
Take a spill each, back-to-back
Beat the Beruberu
Beat the Heliga
Lure in Birble with creamberry fondue
Reach the maximum relationship level
Play a guitar ditty
Fill the vegetable patch
Midnight skinny dip
Pacify five critters in one swoop
Hit 5 critters in their weak spot, in one swoop
Become a bird perch
Land a double backflip
Give a healing hug
Block attacks until exhaustion
Hold each others' hands and never let go
Watch helplessly as the Nest falls