Finish the game on Casual difficulty.

Finish the game on Normal difficulty.

Finish the game on Expert difficulty.

Finish the game on Normal difficulty within 2 hours.

Finish the game on Expert difficulty within 2 hours.

Escape through the helicopter from the roof.

Escape through the underground tunnel with Kay.

5 times or 6 times?

Obtain Breeze-I Pistol.

Obtain Storm-I Submachine Gun.

Obtain Balefire-I Shotgun.

Obtain Meteorite-I Service Pistol.

Destroy 3 signal jammers

Goddess of fire sets down.

The ray of death blasts on the gate of destiny.

Hell hath slowly opens its gate.

Return Kay's camera.

Read Kay's diary.

Give the Prison Guard Key to Kay.

Put out two fires.

Got the key? Now run!

Kill the giant stem in front of the Botany Lab.

Use the rail gun to shatter the huge exoskeleton in the Gun Lab.

Destroy underground ventilation facility.

Destroy the wall that leads to the roof.

Clean the Europa-II virus out of your body.

Disguise yourself as a member of the Retrieval Team.

Whoa, where did it come from?

A nasty encore.

Hmm, no regrets

Release the trapped soul with your weapon.

Defeat Tormentor in the hidden attic.

It is big, but you are stronger

Defeat the demon from the dark torso.

Defeat the demon from the white torso.

Kill your first zombie.

Kill 100 zombies.

Kill 200 zombies.

Kill 350 zombies.

Execute 10 headshots.

Execute 30 headshots.

Execute 60 headshots.

Execute 90 headshots.

Kill 100 enemies with pistols.

Kill 50 enemies with shotguns.

Kill 50 enemies with submachine guns.

Kill 8 Sprinters

Use 30 Fire Grenades.

Use 30 Electric Grenades.

Store 20 Fire Grenades.

Store 20 Electric Grenade.

Store 100 pistol ammo.

Store 300 submachine gun ammo.

Store 50 service pistol ammo.

Store 100 shotgun ammo.

Collect 4 gun mods.

Collect all 9 gun mods.

Exchange ammo with an NPC once.

Exchange ammo with NPC 10 times.

Exchange ammo with NPC 25 times.

Mix herbs once.

Mix herbs 5 times.

Mix herbs 10 times.

Craft ammo once.

Craft ammo 15 times.

Craft ammo 40 times.

Mix gunpowder once.

Mix gunpowder 8 times.

Mix gunpowder 15 times.

Push zombie 5 times.

Push zombie 15 times.

Push zombie 30 times.

Shoot down the third target in the shooting range.

Cast what is seen here to the world, and the missing secret will be revealed.

Use fake flowers twice.

Unlock the last small key room.

Obtain Balefire-II Shotgun.

Obtain Meteorite-II Service Pistol.

Dig 4 graves

Find and open all special force supply caches.

Use Electric Grenade to activate all small generators.

Unlock 20 diaries and documents.

Unlock all diaries and documents.

Use 30 medicines.

Finish the game without using any round shaped gold plate or projector slide.

Not losing any speech opportunties

Explode 50 gasoline drums

Put on Security Uniform

Unlock all maps

Plant a green seed