In this iteration of the Locked Door series, you still need to unlock a locked door. Introducing many more locations including an old garage, a chasm with a rusty drawbridge, a softball field, a locker room, and a mysterious passage.
This solution is by David Welbourn, and is based on Release 1 of the game.
SPOILERS AHEAD. Reading a walkthrough prematurely can sometimes diminish one's enjoyment of an interactive fiction game. Please make an honest effort to play the game before reading this walkthrough.
The treetop is coded like the high shelf in the library.
> x treetop.(can't see from here)
> drop ladder. get on ladder.
> x treetop.(has nest with doorknob)
> take nest.(no: too far)
> chop limb with axe.(+1)
> stand.
> take doorknob.
> w.
Old Garage
> x door. open it.(rusted)
> pry door with crowbar.(+1)
> in.
Garage Interior
> x tube. take it.
> out. e. d. s.
Chasm
> x drawbridge.(rusted)
Guess-the-verb challenges abound in this game, don't they?
> pour lard on drawbridge.(+1)
> s.
Cesspool
> drop tube. ride tube. s.
Island
> stand. in.
Booth
The drawbridge won't lower unless you greased it with lard earlier.
> x panel. push button.(+1. Drawbridge lowers.)
> out.
Island
> ride tube. n.
Cesspool
> stand. n.
Chasm
CAUTION: The bridge is dangerously slippery! Wear cleats! Rex, of course, has no trouble with it.
> wear cleats. w. w.
Thief's Den
> x cutters. take it.
> e. e. n. e. e. u. e.
Locker Room
> x locker.(padlocked)
> cut lock with cutters.(+1)
> take lunchbox. x it. open it.
> x apple. take it.
Return to Bob in the White Room:
> w. d. w. u. nw. nw. u. n. e.
White Room
> give apple to Bob.(now friendly)
> ask Bob for iron key.(+1; it's yours)
> unlock wooden door with iron key.
> open wooden door.(+1, using the doorknob)
> n.
Gray Room
> x case. open it.
> x trophy. take it.(+1)
*** The End ***
Extras
Characters
Bob is in the White Room. He has an iron key, but he'd really like an apple.
Rex is a dog who follows you everywhere.
Endings
Both endings end with The End, but one is clearly better than the other.
You die if you try to cross the lard-coated drawbridge without wearing cleats. You fall to your death.
You win if you take the trophy in the Gray Room.
Inventory
NEW: a rotten cantaloupe. It's in the garden.
In the mysterious chamber, to throw your voice into the cantaloupe, use the book on the cantaloupe. Since the melon appeared to speak, the archway opens.
a crowbar. It's in the shed interior.
In the warehouse, pry the crate with the crowbar.
Outside the old garage, pry the door with the crowbar.
a flashlight. It's in the crate in the warehouse; pry the crate with the crowbar.
Turn the flashlight on to see in the cavernous cavern, the game's only unlit room.
Note: The flashlight's power won't run out.
a step ladder. It's in the storage closet.
In locations with things above you, drop the ladder and stand on it, then look at the high thing and interact with whatever you see there. STAND to get off the ladder. Don't forget to take the ladder again.
In the library, stand on the ladder, examine the shelf, then take the book from the shelf.
In the orchard, stand on the ladder, examine the treetop, then chop the limb with the axe.
a sledgehammer. It's in the storage closet.
In the narrow hallway, hit the flimsy door with the hammer to open it.
a plunger. It's in the bathroom.
Plunge the toilet with the plunger to unclog it.
NEW: Ventriloquism For Dummies. It's the book on the high shelf in the library; see ladder.
Open and read the book; the book contains a scrap of paper.
In the mysterious chamber, to throw your voice into the cantaloupe, use the book on the cantaloupe. Since the melon appeared to speak, the archway opens.
In the white room, after unlocking the wooden door with the iron key, you can open the wooden door if you have the doorknob. You automatically attach the doorknob to the door as part of your attempt to open it.
NEW: an inner tube. It's in the garage interior.
At the cesspool, drop the tube and ride it; now you can go south to the island. Stand to get off the tub.
To return from the island, ride the tube as before.
NEW: a bolt cutters. They're in the thief's den.
In the locker room, cut the lock with the cutters to open the locker.
NEW: a lunchbox. It's in the padlocked locker in the locker room; cut the lock with the bolt cutters.