locker logos on the USG Ishimura glow green when shined on with light, meanwhile on the Valor, they dont.
capacity upgrades refill clip if its not full
The beacon placement animation in Chapter 7 can be skipped by opening your inventory.
If you somehow destroy one of the two remaining "face pods" during the Hive Mind fight while the "grab Issac by leg" animation is still going, it can softlock the fight due to not counting towards the phase change, leaving the only option to get monched and try again (?)
Theres a hidden room in Dr. Kyne's office in the Med Lab in chapter 2. the bookcase on the lefthand wall can be moved with Kinesis.

Flamethrower Only run notes:
An alternate weapon is required for the poison pod hiding in one of the nutrient tank compartments.

An alternate weapon is required for the outside gravity tethers in Chapter 7.

Leviathan Notes:
Alt Fire is your best friend. use it. youll need to get quite close to the Leviathan to damage it.

Hive Mind Notes:
This guy is gonna be a bitch and a half, especially during the "hanging upside down" segment. Alt fire, alt fire, alt fire. 

        o
 o           o
   o       o
   
kill the bottom left, bottom right, middle left, then the last two should be killed to cause the phase change during upside down. rest of fight has nothing to note.


Dead Space 2
Quick Aim: press aim while in inventory to immediately exit and aim your weapon

RIG HP Upgrades refill health when acquired