Complete Impossible Mission Strategy Guide to master all 30 rooms!

(Originally created by James Burrows, recycled with his kind permission)
Let's start with the last room of the game. This is the entrance to Elvins control room. Memorize its position, as you've to enter the big blue door after solving all the puzzles!
In this room you had to remember the pitch of the musical notes that were played then play them back in the correct order (from low to high). Each time you guessed the entire sequence correctly one more note was added to the next sequence.
Easy room this... just step across the first two gaps, drop down on the next platform, search the two objects, jump over the robot, get the next two objects on the platform below and hope the robot guarding the typewriter is Stevie Wonder.
This room was either a doddle or impossible. If the robots had lasers you had no chance and you had to use a snooze or end up getting zapped about 20 times. If they didn't have lasers, it couldn't be easier... simply using jump-search-jump-search tactics coupled with mocking the robots as they couldn't get you was enough to ensure successful completion of this room.
Don't let the deadly Orb in this room give you the shits! To kill it, all you have to do is quickly get to the platform below the robot guarding the bed. Once you're there, the Orb will follow you and if you judge it right... it will hover straight into the robot and disappear!
This room's difficulty was dependant totally on the robots. No matter which route you took to the bottom level, you had to pass one or two of them. Lazy players would use a snooze to get the two items that the bottom robot is guarding. Oh yeah.. remember to laugh as your guy searches the toilet.
This room used to always cause me troubles. The two robots on the right nearly always were fast and had lasers. If you could do this room without dying once and without using a snooze you were doing well!
Quite an easy room this, except that you could only get to the bottom level by dealing with all the robots as the lift platforms only moved one level in either direction. The wide spacious platforms in this room made searching the furniture and avoiding the robots quite easy.
Probably one of the easier rooms. Beware of the first robot as you enter the room though, he can quickly charge at you before you have time to think if you're not careful!
The only tough item in this room was the one on the top-right platform. If the robot guarding it was not deaf, blind and dumb you had little chance of success without wasting a snooze. Damnit I hated wasting snoozes on ONE item (especially as you didn't even know if it would contain a puzzle piece)!!!
In my opinion this was one of the more (and rare) boring rooms. Nothing particularly taxing here except the robot guarding the top platform, who if you catch on a bad day can give you quite a bit of hassle.
This screen was a nightmare! That little bugger on the top-left platform always used to get me! Also, if you actually managed to get to the bookcase on the right you did well but getting back out of the room was impossible if those two robots in the centre had motion sensors. I usually saved a snooze for this room.
Nothing really difficult about this room... depending on how smart the robots were! You could always waste a snooze if that robot guarding the two search objects gave you a spot of bother.
The tough part on this room surprisingly was NOT the robot guarding the items at the top, but the three robots on the lower levels. Depending on the robots' abilities, you had to time it just right to get past them and make it up to the higher platforms.
Searching the top platform was quite easy in this room if the robot patrolling there was not motion sensitive; the lift platform on the left made for a quick escape route. If you're not careful, you can waste a few lift-inits when searching the other three items on the right due to running off the platform when avoiding the robot that is guarding them.
That bloody robot on the bottom floor of this room used to really yank my chain! The little bastard used to just chase me constantly and never let me search the items there! After a while I just got pissed off with it and put him to sleep with a snooze.
Thank God for that computer terminal on the bottom floor! If you get a clever robot guarding the items there it's an absolute nightmare searching everything unless you use a snooze.
I used to find this room quite easy. It's probably best to search the typewriter first then get the items on the left from the bottom upwards so that getting back out of the room is not too difficult.
You have to run very quickly on this room to avoid the nasty Orb. You're safe, however, once you get to the platforms above, where you can take your time searching the items. It doesn't matter how bloody fantastic that other robot is, he can't get you!
This is one of the hardest rooms in the game. Even if the robots are complete muppets you still have to avoid the fast-moving Orb. The best way to beat this room without dying is to use a snooze. Failing that, try to fall directly onto the platform containing the three search items (narrowly missing the Orb) and do some quick search-jump-search moves before making your way over to the lonesome typewriter. Nothing can get you there so you can catch your breath and prepare yourself for the route back to the exit.
The thing to look out for in this room is the low ceilings on some of the platforms. You can quickly die loads of times by trying to jump over the robots when there isn't enough room above your head! Also, if that robot on the top platform can sense where you are... good luck getting out of the room again!
What was the point of this room Epyx? The robots can't move anywhere, even if they have lasers you don't need to go close enough to them to worry about it. The Orb is easy to beat by just running / jumping to the platform on the top-right so that the robot gets it. This is by far the easiest room.
In my opinion this was one of the more (and rare) boring rooms. Nothing particularly taxing here except the robot guarding the top platform, who if you catch on a bad day can give you quite a bit of hassle.
This was a tough room. The nasty route to the top via three possibly very pissed robots meant that even if you used a snooze you might not have time to get to the top, search all the items and return back to safety before the robots woke up and fried your brains.
Due to the orientation of the lift-platforms in this room you never had a simple route to the top. Once up there though, it's relatively straightforward to search the items, unless that robot at the top is a fast moving, motion sensing, laser shooting git.
The two difficult items in this room were the bottom left one and the one on the far right on the second platform from the bottom. I personally used a snooze on this room, as more often than not that robot near the bottom left was Einstein with an attitude.
You have to judge your jump quite well to get to the platform with the Chest of Drawers. Other than that, this room is relatively simple. You might have a problem searching the fireplace if that robot can sense your position (and can move) as there isn't enough room jump over him.
Strange room this one... Quite simple but you may need a well timed jump to get to the typewriter on the far bottom right. It's a simple case of timing to get past the robot on the way to the top floor so you can drop down and search the remaining typewriter
How many times did I die in this room? Not only are the robots usually on the ball, but one wrong foot and you plummet to your death through the chasms at the bottom! If you use a snooze you usually end up having to use 2 or 3 because there are so many items to search and you have to judge your jump to perfection to get to the top-left candy dispenser. Unless the robots are absolute dumb schmucks, you'll end up either dying loads or using all your snoozes and lift-inits in this room.

Ricardo Garcia sent in an additional hint:
Half-step + jump = longer jump! Use this to pass this room.
This room had no robots, but a single Orb following you. It's a simple puzzle to determine the order of which items to search so that you avoid the Orb, but if you can't figure it out you can always freeze it with a snooze.
What is the point of that robot on the bottom? Yeah, like you're ever gonna go down there! This room was just put in as a through-room to get to other rooms in the complex. Getting from left to right was dead easy: just stand still as soon as you enter the room and press jump four times! From right to left though is a different story as you have to judge every jump, but hurry lest you wish to become Orb fodder!