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
Lose a game of strip-a-bobble
Clean up the rust on every fragment
Beat the Lorudo
Finish repairing the Nest
Launch a max-power assistance
Beat the Heliga
Take a spill each, back-to-back
Beat the Beruberu
Become a bird perch
Taste every dish
Reach the heights
Reach the maximum relationship level
Getting handsy under the waterfalls
Fill the vegetable patch
Play a guitar ditty
Lure in Birble with creamberry fondue
Midnight skinny dip
Hit 5 critters in their weak spot, in one swoop
Taste the hygrocybe rubescens
Pacify five critters in one swoop
Launch a max-power double-attack
Give a healing hug
Land a double backflip
Hold each others' hands and never let go
Block attacks until exhaustion
Watch helplessly as the Nest falls