Here is the full list of all 30 Haven achievements worth 1,000 gamerscore. It takes around 15-20 hours to unlock all of the achievements on Xbox One.
Choose not to sever the flow bridge
Finish the game without KO
Try on the flower boots
Choose to sever the flow bridge
Finish repairing the Nest
Beat the Beruberu
Clean up the rust on every fragment
Beat the Lorudo
Beat the Heliga
Getting handsy under the waterfalls
Taste every dish
Lure in Birble with creamberry fondue
Take a spill each, back-to-back
Fill the vegetable patch
Lose a game of strip-a-bobble
Reach the maximum relationship level
Play a guitar ditty
Midnight skinny dip
Taste the hygrocybe rubescens
Pacify five critters in one swoop
Hit 5 critters in their weak spot, in one swoop
Reach the heights
Launch a max-power double-attack
Give a healing hug
Land a double backflip
Launch a max-power assistance
Block attacks until exhaustion
Become a bird perch
Watch helplessly as the Nest falls
Hold each others' hands and never let go