Here is the full list of all 40 XIII achievements.
Complete the campaign on medium difficulty.
Find 5 documents.
Eliminate 3 or more enemies with one grenade.
Make it through a level without shooting anyone.
Eliminate 20 enemies with improvised weapons.
Eliminate 5 enemies with your fists in a row.
Find the secret entrance to the Sanctuary.
Eliminate 15 enemies with a headshot in one level.
Eliminate 5 enemies in a row with a headshot with the Dragunov.
Complete a level without being damaged.
Escape the Canyons on a jet.
Find your first document.
Get 20 pieces of armor.
Unlock 15 doors.
Eliminate 5 enemies in a row without alerting them.
Find a way into Emerald Base.
Find 10 medkits.
Eliminate 6 enemies with one magazine of the Revolver.
Get full armor.
Kill an enemy with the last bullet of the revolver.
Eliminate 10 enemies without getting hurt.
Find your first collectable item.
Reach the truck in Brighton Beach.
Complete the campaign on easy difficulty.
Complete the campaign on the highest difficulty.
Die more than 25 times.
Have XIII drown.
Stab 15 enemies from behind without being noticed.
Destory the armor of a fully armored enemy, then kill him with a melee attack.
Kill 4 enemies at once with the Bazooka.
Swings from a grappling hookc to another 3 times without touching the floor.
Empty the Revolver using the alternative fire mode without missing any shots.
Crash everything at the beach house.
Destroy a punching bag.
Complete the Sanctuary cliff section in under 3 minutes.
Find 10 documents.
Find 15 documents.
Find all the documents.
Find all collectible items.
Obtain all achievements.