Here is the full list of all 21 El Paso, Elsewhere achievements.
Get the "Scars Fade" ending.
Defeat Draculae.
Collect the Launcher.
Defeat Djedefre.
Kill the Burned Man.
Kill the Angel.
Collect the Uzi.
Stake 250 enemies.
Heal 50 times.
Kill a mega enemy.
Kill the Puppeteer for the first time.
Hit 1,000 weak points.
Roll 150 times.
Save 10 hostages.
Clear the first Landmark level.
Clear the tutorial.
Find all Pill Cop segments.
Find all projectors.
Get the "Thanks for Believing" ending.
Dive 150 times.
Kill 5 hostages.