Here is the full list of all 35 Shadow Man Remastered achievements.
Defeat Legion and stop the apocalypse
Fail to stop Legion from bringing about the apocalypse
Find every Cadeaux
Open all Soul Gates
Reach Shadow Level 10
Defeat Victor Batrachian
Defeat Avery Marx
Find the second Violator
Defeat Milton Pike
Defeat Marco Cruz
Offer Cadeaux to all life altars
Defeat Jack the Ripper
Find the Violator
Defeat a True Form
Acquire Swim Gad
Bestow nightfall to Liveside
Reach Shadow Level 7
Acquire Poigne
Acquire Walk Gad
Unlock a Secret
Find an Accumulator
Find a Retractor
Reach Shadow Level 4
Acquire Touch Gad
Offer 100 Cadeaux to the Loa
Find a piece of the L'Eclipser
Defeat Yort
Find a Voodoo weapon
Find and take a Dark Soul
Open a Soul Gate
Unlock all Secrets
Save the world without dying
Shoot down all helicopters in Gardelle County Jail, Texas.
Defeat the Seraph Queen
Enter the horror again through the hardest of trials.