Here is the full list of all 35 Seeking Dawn achievements.
Multi-players Master mode clearance
Both modes clearance
Kill an enemy with a critical hit at 30m away...
Find the ball.
Upgrade any weapon to LV2
Beat the game.
Kill 30 dragonflies.
Defeat Commander Holquist.
Craft all the weapons.
Destroy the EM Tower.
Through the maze in Frozen Hollow
Have 10 turrets operational at once.
Have 2500 of any ammunition type in your inventory.
Use the Woodchucker to kill an enemy.
Overcome the climbing challenge in Frozen Hollow
Eat a hamburger when your satiety level is at 100%.
Through the flashing bridge in Frozen Hollow
Throw poop at a friend.
Pick up the poop.
Defeat the Trogleuth.
Kill a boss in multiplayer mode.
Upgrade any weapon to LV3
Find Walker’s ship's black box.
Reach The Verdant Path.
Open the in-game console...
o(*￣︶￣*)o
^(*￣(oo)￣)^
ヾ(@^▽^@)ノ
Ditch your mission before it even begins.
Obtain full set of second level armor.
Clear the game without dying once.
Participate in the Closed Beta or obtain a level 1 badge.
Single-player Master mode clearance
Own all LV2 weapons
Own all LV3 weapons