This is pretty straightforward. You unlock this as you enter the tram at the end.

This is pretty straightforward. You unlock this as you enter the tram at the end.

This is pretty straightforward. You unlock this as you enter the tram at the end.

This is pretty straightforward. You unlock this as you enter the tram at the end.

This is pretty straightforward. You unlock this as you enter the tram at the end.

This is pretty straightforward. You unlock this as you enter the tram at the end.

This is pretty straightforward. You unlock this as you enter the tram at the end.

This is pretty straightforward. You unlock this as you enter the tram at the end.

This is pretty straightforward. You unlock this as you enter the tram at the end.

This is pretty straightforward. You unlock this as you enter the tram at the end.

This is pretty straightforward. You unlock this as you enter the tram at the end.

This is very easy and can be completed at pretty much any stage of the game. To complete it, simply enter the Store, click on an item, and then choose move. You can move every item to your Safe then move it back to your Inventory if you are impatient.

Although it may not seem like it, this is very easy if you just make sure to pick up everything and you search everything. A step-by-step guide is not necessary. Remember blue lights on cabinets will open, and green chests can be broken. I got this near the beginning of Chapter 5.

This is also a mini-game and is easily spotted on Chapter 10. In order to win, you have to jump to each of the lit up platforms to generate a score multiplier, use Kinesis to grab the ball, and shoot it in the goal at the end of the room. For more detailed instructions, there is a Log in the game to help you.
*Tip by Con818* Easy way is to stand on the front platform, shoot the ball, catch it as soon as it leaves the holes, shoot back in, finish game, exit the room, repeat.

This is very easy because 8 is only about half the number of Schematics there are. Once again, Schematics appear as dark blue, shiny objects. This is unlocked at the very, very beginning of Chapter 4 if you've gotten all of them so far.

Very easy. You can get this as soon as you are given Kinesis by just randomly grabbing and firing objects. After you grab something, make sure to press the right trigger to fire. It doesn't even have to be fired at an enemy, just fired in any general direction.

This really needs no explanation, as this will probably be the first trophy you unlock. Remember that dismembered limbs are the name of the game in Dead Space. Always aim for the arms or legs.

You'll get this just by playing the game as long as you're playing the game correctly.

This is fairly easy, just use it every now and then, especially around the recharging stations. It'll unlock pretty soon. I got mine on Chapter 5.

This is a mini-game and is easily spotted on Chapter 9. You have to shoot every red target and miss every blue target in the Shooting Gallery. You just have to hit the targets; head shots are not necessary. There are 6 levels you have to complete with perfect scores to get trophy.

If you're planning on getting the Z-Baller achievement, don't even bother spamming the jumps to get it early. There is at least one Zero-G area on every level. I got this on Chapter 10 in the Zero-G Basketball Court.

I found this one to be a lot harder than it sounds. Its pretty difficult to just beat-down any of the enemies, but there is a way around it. Just shoot them with Stasis first, then punch or stomp until they split to pieces.

This can first be done on Chapter 4. The panels on the floor that kill you and everything else are gravity panels. To force enemies through, first use Stasis on them, then walk into them to push them into a gravity well. This doesn't have to be completed on Chapter 4; there are a couple other segments with gravity wells.

You'll get this whilst playing through the game. DON'T SPEND MONEY FOR NO REASON! Trust me, you need it for Power Nodes. 

Self-explanatory. Simply buy the weapon, and kill the enemies.

Self-explanatory. Simply buy the weapon, and kill the enemies.

No your game is not glitched; there just aren't 30 enemies on Chapter 1.

Self-explanatory. Simply buy the weapon, and kill the enemies.

Self-explanatory. Simply buy the weapon, and kill the enemies.

Self-explanatory. Simply buy the weapon, and kill the enemies.

Self-explanatory. Simply buy the weapon, and kill the enemies.

Peng's Treasure is located directly to your right as you exit the ship on Chapter 1. Unfortunately, its also out of reach. When you come back here in Chapter 11, you will have Kinesis to grab it with. As soon as you step into the landing bay in Chapter 11, it will be to your right, in between the catwalks and over the railing. It is a small golden trophy.

This is pretty straightforward. You unlock this as you enter the tram at the end.

This is pretty straightforward. You unlock this along with Exodus on Chapter 12.

Once again, not that hard. 150 is not all of them, and a guide isn't necessary for observant or thorough players. I got this about midway through Chapter 11. If you skip a lot of areas or are extremely unobservant, I won't guarantee you'll get this without a guide.

Another easy one. Simply purchase all the weapons from the store after finding the Schematics for them. Also, make sure to return the Schematics to the store, otherwise they're useless. Schematics appear as dark blue, shiny objects and are relatively rare, so make sure you at least get all the weapons. There are a total of 7 weapons. I got this at the end of Chapter 4.

I got this on the very last part of Chapter 12 with only two or three enemies to spare. If you don't get it in time, don't worry. Just keep playing, and it'll unlock before you know it and yes, it is cumulative through multiple playthroughs.

Complete the game on the impossible difficulty. Impossible difficulty unlocks when you beat the game on any difficulty. This is by far the hardest trophy to attain. Conserve ammo and aim for limbs.

I recommend you to do this on your first playthrough. The Plasma Cutter is the first weapon you get and is not underpowered in anyway after it is upgraded. The other weapons can be purchased; just don't fire any of them.
*Tip by Con818* One Gun can be gotten on a 2nd play through. Same rules apply of course for that play through.

This is impossible on a single playthrough. Try to save as much money as possible on your first game to spend on Power Nodes later. Also, make sure to grab all of them off the walls. After you complete the game, save and reload to continue with your items.

Self Explanatory