Here is the full list of all 15 Oh Deer achievements.
Hunt the Hunter
Hunt your first player deer.
Launch the game for the first time
Eat 100 mushrooms. Any effects yet?
Eat 20 mushrooms in one round
Eat 500 mushrooms. Save some for the rest of us, geez...
Make it to the Cabin after losing your Sanity.
Hunt 4-player deer in one round
Deer win with 4 player deer remaining
Spot 100 deer with TrailCams
Hunt 100 player deer
Activate the SHOVE statue in the deep sea
Step on a landmine. o7
Get caught in a Beartrap. Watch your step!