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