Here is the full list of all 36 The Flame in the Flood achievements.
Survive the first 20 days in Endless Mode without killing any animals
Survive 200 miles in Endless Mode
Travel 20 miles with the raft motor running
Travel 10 miles on the river without stopping
Survive 100 miles in Endless Mode
Craft every item
Survive the first 40 days in Endless Mode without eating any plants
Survive 40 days in Endless Mode without sleeping in a shelter
Repair 1000 points of raft health
Make 50 articles of clothing
Speak with every river resident
Complete the campaign without killing any animals
Start a new game with items in Aesop's bag
Reach The Kingdom in Campaign Mode
Sleep in 20 churches
Equip a full set of Bear Hide clothing
Contract Every Affliction
Eat all the bad stuff in a single playthrough (tainted bait, spoiled fish, raw meat, spoiled meat, devil's trumpet)
Kill every animal type with arrows
Equip a full set of Wolf Hide clothing
Reach Angel Yards in Campaign Mode
Killl a Bear
Die in every possible way
After 20 days of travel, have every stat at 100% and no afflictions
Fully upgrade your raft in a single playthrough
Reach High Ground in the Campaign Mode
Visit every location type
Poison 20 wolves with tainted meat
Cure 30 afflictions in a single playthrough
Have 10 stacked afflictions
Die from dehydration with suffering from dysentery
Lure a hostile animal into a snake
Eat every type of plant
Expand your inventory to the maximum
Kill a wolf
Build a campfire