Here is the full list of all 21 El Paso, Elsewhere achievements.
Stake 250 enemies.
Kill 5 hostages.
Get the "Scars Fade" ending.
Defeat Draculae.
Dive 150 times.
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.
Hit 1,000 weak points.
Kill the Puppeteer for the first time.
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.