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