Here is the full list of all 47 Dead Space achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Dismember 500 Limbs.
Own every weapon in the game.
Complete Chapter 5 on any difficulty setting.
Collect 75 Logs.
Use Stasis on 50 enemies.
Complete Chapter 4 on any difficulty setting.
Kill a Brute.
Complete Chapter 3 on any difficulty setting.
Kill 30 enemies with the Pulse Rifle.
Complete Chapter 2 on any difficulty setting.
Pin an enemy.
Complete Chapter 1 on any difficulty setting.
Dismember 50 Limbs.
Complete Chapter 6 on any difficulty setting.
Complete Chapter 7 on any difficulty setting.
Complete Chapter 8 on any difficulty setting.
Complete Chapter 9 on any difficulty setting.
Complete Chapter 10 on any difficulty setting.
Complete Chapter 11 on any difficulty setting.
Complete Chapter 12 on any difficulty setting.
Discover the Hunter's origins.
Pursue Nicole's investigation.
Complete the game on Medium difficulty or above.
Complete the game in Impossible Mode.
Complete New Game Plus on any difficulty mode.
Install every weapon upgrade.
Kill 30 enemies with the Flamethrower.
Kill 30 enemies with the Ripper.
Kill 30 enemies with the Force Gun.
Kill 30 enemies with the Line Gun.
Kill 30 enemies with the Contact Beam.
Beat the game using only the Plasma Cutter.
Place 25 items in Storage.
Collect 150 Logs.
Collect all Schematics.
Rip off a dangling limb using Kinesis.
Kill 10 enemies with a stomp attack.
Fully upgrade all weapons and equipment.
Survive the Shooting Gallery.
Complete Level 6 in Zero-G Basketball.
Find the Peng Treasure.
Create the Master Security Override.
Kill the Leviathan.
Kill the Leviathan Remnant.
Kill the Hive Mind.
Pick up a Marker fragment for the first time.
See the alternative ending on any difficulty mode.