You wake up in your room, and have some dialogue.

When you leave your room, going up the narrow hallway, you will die the first time, from some sort of plate smashing on your head.
Your character begins to realize what's up (they come back to life) when they see the blood from beneath the plate.

Then you go through another door, into a hallway that runs left/right. When you come level with the yellow danger sign, a trap will go off (triggering it is unavoidable) and you will get a dialogue thing. To avoid an unneeded death, RUN back the way you came and dive into the doorway. (You may need to start over, because it's hard, and avoiding this death in at least ONE playthrough is important.)

The hallway now safe, go on down it. You may examine the obvious-to-us secret panel along the hall and the hole on the tile of hallway past the door, but they don't do anything yet.

Go up into the next room (which has another pod/vat), and examine the cardboard boxes. Take the metal stick you find and stick it in the hole, then go to the panel and get the sledgehammer. Go into the next room, then the side room at the left. Smash the generator. (Which will kill you, and this seems unavoidable - if you find a way, please tell me!)
You will come back in front of the vat in the previous room, have some dialogue, auto-walk to see that the laser-grid is now off. Proceed to the next room.

Inside you will find spike going up and down. Walk up and examine them, then go back to your room and get the metal rod out of the locker. Come back and you will use this to vault across the spikes. Proceed to the next room.

Inside is another pod, and your character voices distrust. She's right; there are 4 tiles that will drop her to her death - one on the left edge, two along the middle, and one on the right edge. To avoid counting, I suggest walking along the right, as the trap there is aligned with the camera (so when you are just before being lined up with it, walk around that tile). Proceed to the next room.

Which is filled with poison gas! Go to the left-hand locker (upper-left of room) and get the crowbar, then use it on the crate on the left (lower-left of room). You will get a fuse. Go to the electrical box and put the fuse in. Then exit through the top of the room and pull the level, and return. Wait for the poison timer to finish, at which point you will come back in the room with the trap floor. Walk through it like you did before. You may now examine the console if you'd like.

Proceed to the next room (the one after the poison one) and go up the hallway - be ready to dodge the energy bolt that comes flying at you! Then go to the exit sign, and proceed.

Just follow the hallway to the "exit".


Achievement: if you died only 3 times (once to plate, once to generator, and once to poison), then along the "exit" hallway you can go into the secret room with a 3 marked on it. Inside, go to the desk and read the left-hand stack of notes, and you will unlock the achievement titled "The Failure". You may then go back into the hallway and proceed as normal.

Dive right on into the water at the start. Go up, then right, then into the next room (through the place it says "exit"). There are doors, but they're all locked.

In the next (2nd) water room, go down and right - up is blocked by... rubble. In the upper-right corner, the door will open.

In the third water room, go up, then when it practically Ts, go left - use the ladder in the upper-left corner.

There seems to be nothing else of interest in the water rooms, aside from the (locked) storage room and the (flooded, so non-operational) computer. (You pass them in the second room.)

At the top of the ladder is a small room with a pod and a door to the next room.
In there, there are two electric things ahead which will fry you if you walk through. Getting ready to RUN, go down the left hallway and interact with the robot. It will try to kill you - run back and cause it to crash into the electrical shockers, cause it to blow up, destroying them.

Proceed to the next room, which has another pod. Go down the hallway and get impaled, which unlocks the "secret" door on the right of the pod. Go in there, get the key from the computer station, and go back to the storage room.

In the storage room, grab the Lever Bar from the rear locker and go back to the "secret" room. Put the lever in the thing and pull it, retracting the spikes. Go back, cross your corpse (no impalement this time!) and go to the next room.

Therein is a giant green laser, pulsating. It kills you *only* at full strength - as such, step into its path as soon as it fades a shade from the peak. Further, it appears to always be ramping up when you load a room (that is, when you come in from the prior room, or go into another room with it on the left/right, or come back in from another room), so... stepping into another room in a way that means you'll be in the path seems like a bad idea.

The door ahead is locked. Left immediately leads to a new "room", which is still one-wide and laser-filled, so death. Going right you can dive into alcoves with vents to hide from the laser when it's at "kill" strength; the third alcove has the vent uncovered and you can go through. The door at the bottom of this new room is the locked one; unlock it from this side.

Proceed up to the next room. You can either... well... risk overloading the reactor by turning the vent off and go find the code, or use code 6791 to redirect the gas to somewhere else (don't know where you can find the code - yet, anyway).

If you turn off the vent, the laser turns off.
Achievement: this enables you to go further right, accessing another room via a second open vent. Examine papers on the desk to earn the achievement "The Project".
Down the left has nothing.

If you have died once (and don't have a meltdown to flee from) you can go into the room marked with a single slash on the left, and see a few story hints (I assume that's what they are) and get a hidden item. Go back into the hall and the path towards the exit is on the left.

[to be continued]

Achievement after finishing, when you are in your room and the robot comes in, you can tell it "No!" to earn the "Forever Sleep" achievement (and the "bad ending") - however, you'll need to do Stage 2 again.