Used the StA5X Arc Cannon to kill 3 Helghast with one shot
Liberated Narville from Stahl Arms South
Reached the cable car and gained access to Stahl Arms South
Killed 25 Helghast using Brutal Melee
Used the secondary fire function of the WASP launcher to kill a single Helghast
Got off the 2nd Rig within 2 minutes.
Sneaked past all Helghast in the Jungle without alerting any of them
Made contact with Earth
Killed a Helghast by shooting a Burster plant
Killed 10 Helghast using Brutal Melee
Successfully assisted with defeating the Arc APCs
Destroyed all the Helghast Tanks in the Senlin Beach section
Reached the Corinth River with the convoy
Performed first Brutal Melee move
Completed weapons training in Prologue
Continue playing to unlock this secret achievement.
Beat the game.
Defeat Mine in Chapter 12.
Win a round of either Rush or Conquest on all four Vietnam levels
Complete 50 substories.
Defeat Fuma in Chapter 10.
Encounter all the masters.
Finish 50 battles with HEAT actions.
Complete 30 substories.
Run 42.195km.
Break 100 weapons picked up in battles.
Defeat Lau Ka Long in Chapter 8.
Defeat Majima again in Chapter 7.
Defeat Kanda in Chapter 6.
Defeat man in black suit in Chapter 5.
Defeat Hasebe in Chapter 4.
Make a mod weapon.
Have your first Revelation.
Complete 10 substories.
Defeat Tamashiro in Chapter 3.
Defeat Rikiya in Chapter 2.
Defeat Majima in Chapter 1.
Kill 2 Malthusians within a timed chain attack.
Kill 5 Mathusians with fire or electricity.
Drown a Malthusian.
Save Chief Billingham.
Complete a hack.
Used the TMD to find 15 Chrono-Notes in single player campaign
20 Spikeshot kills in single player campaign
40 AR9 Valkyrie kills in single player campaign
Score a 5x multiplier in a Story level
Change your costume
Complete the first level in co-op.