If you've done the instructions for the red dot correctly, the answer for that one should be G, rather than H.

Get four slips of paper with arrows on them.

Nothing to collect here, per se, but notice that you can turn the lights on or off for each cubicle.

Those are some strange-looking clock hands; take a picture of them, maybe? Also, look at the picture above the side table; get the robot keychain.

• There are three colorful stick-like things in plain sight: one on the floor towards the left, one on top of the CD player (the thing that looks like a projector to the left of the TV), and one to the right of the right-hand speaker.

• There's a fourth stick-thingy in the left-hand drawer.

• The middle-left drawer needs a four-digit code with colors red, yellow, light blue, and green.

• The middle-right drawer needs three lowercase letters in yellow, orange, and red.

• The right-hand drawer needs what looks like four shapes, but is actually four numbers, in yellow, red, light blue, and pale violet.

There's another stick-thingy, and a sphere on a pedestal that has four dials in green, red, yellow, and lavender.

• The left door needs a four-letter clue, in dark yellow, light blue, green, and red.

• The left-middle door is open. Collect another stick-thingy, and what looks like a bingo card.

• The right-middle door is also open; get what looks like a base for the stick-thingies, judging by the one stick that's already in it. However, you can't put your sticks in until you have all 8.

• The right door needs roman numerals associated with three shapes: a circle, triangle, and square. (If you're doing things in the same order as me, you already have the clue for this, but for ease of navigating these instructions, we'll come back to it later.)

There's a switch that won't work, with four buttons below it in yellow, white, blue, and pink.

This opens the long low cabinet's right-hand door.

Get another stick-thingy from the big robot's feet. The robot is holding something in its left hand, but doesn't want to let go. Maybe if you put something in his other hand, he'll let you have it?

Combine with the paper you got from the big robot, with the four colored dots and the letters A-H along the bottom.

Combine this with the four slips of paper with arrows on them to open the left-hand door of the long low cabinet.

Get the last stick-thingy and some bingo balls.

Once you have all eight stick-thingies, put them into the base. Click the slider knob to turn the base until you can see a number.

This is the clue for the left-middle drawer under the TV. The numbers are in the same order as the clue. Get the CD, and note (read: take a photo of) the colorful sides of the drawer.

Combine the bingo balls and the bingo card to solve the mirrored shelves. (Don't forget to take advantage of the game's helps: for example, you can fold up the numbers on the bingo card, so you don't have to remember which ones should be covered.)

The sound indicates something happened, but what? Take a look around the room.

Put the CD into the player next to the TV. Click the big white panel to start playing and note the letters that appear. (You can make the "music" stop by clicking the speaker icon.)

Don't forget that you can take a picture of the panel (I *think* you don't need to worry about timing, as in the photo will always include the full clue, even if you click the shutter while only one letter is showing.)

This goes with that sphere-on-a-pedestal that's on the coffee table. Set the dials to match the picture.
Colorblind:

So, it looks like the sphere is a projector of some sort - maybe a planetarium-type thingy? But there's too much light in the room to see what it's projecting.

This is the clue for unlocking the big switch on the pillar.
Colorblind:

Once you've unlocked the switch, go ahead and click it.

Look around the room for any suspiciously glow-in-the-dark items. Or, you know, maybe now you can actually see what that projector on the coffee table is projecting.

Turn the lights back on after you're done.

This is the clue for the right-hand door of the TV stand.

Get a box with four buttons and a CD-shaped indentation.

You just got an object that greatly resembles this drawer in at least one respect.

Get three colorful tealights with letters on them.

The tealights are the clue for the right-middle door of the TV stand. Yellow = f, orange = a, red = g (and don't think too hard about what that spells). Get a box of matches. Also, the candles don't disappear, so they must have another use.

Remember how one of the plates on the dining table had a candle on it? Go put the three new ones on the other plates.

I dunno, maybe you could light the candles? And then, to better appreciate their ambience, turn off the lights? Don't forget to take pictures of all four plates. And then turn the lights back on so you don't stub your toe or something.

What else in the room had 12 segments around the edge like this?

Get the key.

Note that this game has two secrets. One you need to find before exiting, and one you can only find afterwards.

Look at the bottom of the camera.

After exiting, click the feet of the little robot to topple him and reveal the heart on the soles of his feet.