It looks like only Van ("Lil bro" in the patch) can glitch through stuff. The other boy will usually crash the game.
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When glitching through towards the lighthouse, you have to cross a river. The river apparently normally needs to be dried before you can go on. The flag for this seems to be at $C3AB.
When this value is 0x80, the river is full (in the beginning of the game). It seems the glitch has a potential to turn this value to 0xC0 (dried).
Are there maps of this game?
The 3 common endings all seem to require an extended list of items that you need to get. The other 2 endings are "sleep to day 100". I don't know yet if the glitch can change the day counter.
=== Ending 1 (Lighthouse) ===
- Find 2 Ivy, 1 stick
Make rope ladder
- Go to nearby hut, enter and read the code
- Go to the nearby cliff side and make friends with the parrot
- Go to the lighthouse:
--- Towards the top:
Ask parrot for favor to hang up the rope ladder
Get the broken engine and break it (= magnet and wire)
--- Basement:
Enter code
get the light bulb
get the rotor fan
Use wire on controls
Use rotor fan on water
--- Top:
Use light bulb on empty spot
Use good motor on empty spot
- Leave lighthouse, cutscene
- Sleep 4 days in the lighthouse
Open questions:
== Where is the "good motor"?
== What can possibly happen if you decide to start in the prison instead of the beach?
These items can be found in the prison:
Weak ladder
shovel
egg timer (can be broken into timer parts and battery)
Film
Screw tack
Bent nail
Bolt
Gunpowder
Crank
Flower
== Go for other endings?
===Ending 2 (Warpship lifeboat)===
These items can be found in the warship:
grenade(?)
There is a switch on the top floor and a lever in the basement floor,
one is for opening a wall and the other is for dropping the anchor so you can climb down the ship.
There is an area you can only access if you have the flashlight.
You cannot glitch into it.
The area with the lifeboat (right side of the ship) is inaccessible,
but there are is a trigger that can lead to the ending.
Maybe it is possible to glitch there.