Here is the full list of all 21 El Paso, Elsewhere achievements.
Get the "Scars Fade" ending.
Defeat Draculae.
Stake 250 enemies.
Collect the Launcher.
Defeat Djedefre.
Roll 150 times.
Kill the Burned Man.
Kill the Angel.
Collect the Uzi.
Kill a mega enemy.
Heal 50 times.
Kill the Puppeteer for the first time.
Hit 1,000 weak points.
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.