Find your way inside the Maniac Mansion.

Find a way into the basement and turn on the light.

Get the tools.

Fix the phone.

Enter the observatory.

Open the wall-safe and thieve its contents.

Get buff with the 'Hunk-O-Matic Machine' [TM].

Fix the short-wave radio.

Play Meteor Mess.

Start the Weird Edsel.

Satisfy the Green Tentacle by giving him his favorite food.

Satisfy the Green Tentacle without his favorite food.

Get a recording contract for the Green Tentacle.

Help Weird Ed with his plans.

Get past the Purple Tentacle with a great deal.

Get past the Purple Tentacle using your authority.

Finish the game with Dave dead. [Any ending except 'famous']

Finish the game with the 'police' ending.

Finish the game with the 'space' ending.

Finish the game with the 'plant' ending.

Finish the game with the 'famous' ending.

Finish the game with the 'famous' ending, after alerting the authorities.

Murder the innocent, claim their remains. Totally Awesome!

Get a recording contract for one of the kids.

Cause long distance destruction with the casette tape.

Return Ed's friend in top condition.

Escape the dungeon without using the key.

Collect a refreshing, ice cold can of Pepsi from a Pepsi machine.

Meet death through breathing radioactive steam.

Suffer a catastrophic nuclear meltdown via power overload.

Suffer a catastrophic nuclear meltdown via pool-related shenanigans.

Suffer a catastrophic nuclear meltdown via self destruct.

Ed doesn't take too kindly to murderers. Argh!

Get the Green Tentacle to kill you out of jealousy.

Use the invisible keypad.

All the kids have died. The rescue attempt failed.