Here is the full list of all 13 Oakwood achievements.
Complete the game
Complete 'There's Something in the Sewers'
Picked up the night vision goggles
Complete 'Into the Woods'
Complete 'Oakwood Lodge'
Trap a dinosaur
Discover the abandoned lodge
Complete 'Welcome to Camp'
Find the campsite
Collect all totems
Access the secret area
Discover a strange creature's remains
Get devoured by a t-rex