Solution by Garry FRANCIS

This is a minimal solution. You'll need to EXAMINE lots of things for this solution to make sense. Some optional (but significant) commands are shown in parentheses. These can be omitted once you know what to do.

You start the game in darkness. It's dangerous to move around in the dark, so your first goal is to find a light source. You don't have to look far, as you're carrying a torch, so turn it on. However, the batteries die after ten moves, so you'll need to find an alternate light source. There's one not far away, but this turns to dust as soon as it's exposed to sunshine. You can leave it behind in case you need to return, but there's another dark area yet to be encountered, so you'll need to find fresh batteries for your torch at some point.

There are two mazes. You will not have enough objects to map the first maze using the traditional drop an object to make the room unique, but examining the correct thing will lead you to the exit. The second maze is much smaller and each room can be identified by examining something that is different in each location.

001 - (I) (you're carrying a torch)
002 - TURN ON TORCH
003 - N
004 - N
005 - W (you see something shiny under the water)
006 - X GLOW (it's coming from a large shell, so you move it to a dry spot)
007 - GET SHELL
008 - (X IT) (the glow is coming from deep within the shell)
009 - BREAK IT (it reveals a luminescent sponge)
010 - (I) (you're left with a broken shell and a sponge providing light)
011 - (X SHELL) (it's shaped like a scoop)
012 - E
013 - E
014 - E (the stone door crashes down behind you)
015 - (From this point, you can X LABYRINTH to feel a breeze. Just follow the breeze OR keep heading east until you find the medallion OR follow this shortcut.)
016 - E
017 - E
018 - N
019 - GET MEDALLION
020 - (X IT) (it has raised symbol of snake facing to right)
021 - S
022 - DROP SPONGE (in case you need to come back)
023 - S (the sponge turns to powder and blows away if you didn't drop it)
024 - W
025 - (X FLOWERS) (they're mainly daffodils)
026 - S
027 - (X FLOWERS) (they're mainly daisies)
028 - N
029 - (X FLOWERS) (they're mainly poppies, the ground has been disturbed)
030 - DIG SOIL WITH SHELL (you find a bundle of plastic)
031 - (DROP SHELL)
032 - GET BUNDLE
033 - (X IT) (there's something wrapped in it)
034 - UNWRAP IT (it was a plastic raincoat wrapped around an umbrella)
035 - WEAR RAINCOAT
036 - (X UMBRELLA) (it has a J-shaped handle and is closed)
037 - W
038 - W
039 - W
040 - W
041 - W
042 - N
043 - (X FARMER) (he looks frail, he's carrying a rifle and a box of matches)
044 - (TALK TO HIM) (he mentions a thief)
045 - (ASK ABOUT THIEF) (stole his pipe, also mentions well, sanctuary, hole, rope)
046 - (ASK ABOUT WELL) (the water is muddy, so don't drink it)
047 - (ASK ABOUT SANCTUARY) (he doesn't know anything about it)
048 - (ASK ABOUT PIPE) (thief stole it, can take anything you want if you return it)
049 - (ASK ABOUT HOLE) (it's covered in yellow substance)
050 - (ASK ABOUT YELLOW SUBSTANCE) (touch it & you die, burn body to make it safe)
051 - (ASK ABOUT ROPE) (the thief stole it)
052 - (ASK ABOUT PROFESSOR BAUMBEKER) (only person he's seen recently is thief)
053 - (ASK ABOUT MEDALLION) (it's the key to teleportation)
054 - (SHOW MEDALLION TO FARMER) (he recognises it, it's said to be key to sanctuary)
055 - (ASK ABOUT AMOS NEWTON, CAVES, HIMSELF, LABYRINTH, MATCHES, ME, RIFLE, ROPE, TRACTOR, WIFE)
056 - ASK FARMER FOR MATCHES (he gives them to you, but return them later)
057 - (N) (the old man won't let you in, find his pipe and he might consider it)
058 - S
059 - S
060 - (X TRACTOR) (you should search it)
061 - SEARCH TRACTOR (you find an oil can)
062 - GET CAN
063 - E (there's a pool of bubbling yellow liquid here, but don't touch it)
064 - S (there's a rope tied to a tree here, but don't touch it)
065 - Z (the rope moves)
066 - Z (the rope goes taut)
067 - Z (man emerges from hole and dies with warning not to touch yellow substance)
068 - (X MAN) (he's covered in the yellow liquid and holding a piece of paper)
069 - (X PAPER) (it's a drawing of a man next to a well holding an umbrella)
070 - LIGHT MATCH
071 - BURN CORPSE WITH MATCH (it should be safe to search him now)
072 - (X CORPSE) (it's burnt beyond recognition, but the yellow substance is gone)
073 - SEARCH CORPSE (you find a pipe)
074 - GET PIPE
075 - N
076 - W
077 - N
078 - N
079 - GIVE PIPE TO FARMER (he thanks you and asks for his matches)
080 - GIVE MATCHES TO FARMER (he lights his pipe, you can now enter his shack)
081 - N
082 - (X TRUNK) (it's closed)
083 - GET BOOTS
084 - WEAR THEM
085 - OPEN TRUNK (you find a pair of rubber gloves and some batteries)
086 - GET GLOVES
087 - WEAR THEM
088 - GET BATTERIES
089 - PUT THEM IN TORCH
090 - GET LADDER
091 - S
092 - S
093 - DROP LADDER (we'll come back for it later)
094 - S
095 - E
096 - S
097 - UNTIE ROPE (it's safe now that you're wearing gloves)
098 - GET IT
099 - N
100 - W
101 - N
102 - N
103 - W
104 - TIE ROPE TO WELL
105 - D (it's dark)
106 - TURN ON TORCH
107 - S
108 - U
109 - (X DOOR) (next to the doo is a niche with a lever)
110 - (X NICHE) (it contains a lever)
111 - (X LEVER) (you'll have to pull it with something)
112 - PULL LEVER WITH UMBRELLA (dart bounces off handle and door swings open)
113 - S (door shuts behind you)
114 - E (yellow liquid is dripping from ceiling up ahead)
115 - OPEN UMBRELLA (you should also be wearing the raincoat, gloves and boots by now)
116 - E (raincoat, boots, gloves and open umbrella protect you from yellow substance)
117 - S (it's a dead end)
118 - (X WALLS) (they're covered in symbols and carvings)
119 - (X SYMBOLS) (they surround the carvings)
120 - (X CARVINGS) (a depression attracts your attention)
121 - (X DEPRESSION) (it's the mirror image of the medallion)
122 - PUT MEDALLION IN DEPRESSION (east wall slides aside)
123 - E (there's a hole in the floor here)
124 - (D) (you'd need a ladder)
125 - GET BAR
126 - (X IT) (it's a short crystal bar with a tringular cross section)
127 - E
128 - (X SPHERE) (it's identical to the one in the professor's lab)
129 - (TOUCH IT) (find the professor first)
130 - (X BASE) (there's some curved scratches on the surface)
131 - TURN STATUE (you find a bomb)
132 - GET BOMB
133 - (X IT) (it's trigger activated, but the spring is rusty)
134 - PUT OIL ON SPRING (the trigger should work now)
135 - (DROP CAN)
136 - (X MIRROR) (there's a ripple in the reflection)
137 - TOUCH MIRROR (you pass through to the other side)
138 - GET BOWL
139 - N
140 - N
141 - W
142 - W
143 - W
144 - N
145 - GET LADDER
146 - E
147 - N
148 - DROP BOMB
149 - PRESS TRIGGER
150 - S
151 - Z
152 - Z (bomb goes off)
153 - N (the boulder has been replaced by debris)
154 - N (or ENTER PASSAGE)
155 - N
156 - N
157 - W
158 - THROW LADDER OVER WATERFALL
159 - E
160 - S
161 - S
162 - (OPEN CHEST) (it's made from a single block of granite with no way to open it)
163 - (X CHEST) (there's a triangular hole in the lid)
164 - PUT BAR IN HOLE (chest opens to reveal a green liquid)
165 - FILL BOWL WITH LIQUID
166 - (DRINK LIQUID) (you take a sip, it tastes digusting, but you feel energised)
167 - S
168 - S
169 - W
170 - N
171 - (ASK ABOUT MONUMENT) (revered by religious cult that think it's built by aliens)
172 - (ASK ABOUT GRANITE CHEST) (it's said to contain the gift of life)
173 - (ASK ABOUT GIFT OF LIFE) (it's said to be in the chest)
174 - (ASK ABOUT GREEN LIQUID) (it might be the gift of life)
175 - (SHOW LIQUID TO FARMER) (it must be the gift of life)
176 - W
177 - D (you manage to keep most of the green liquid in the bowl)
178 - N
179 - GET LADDER
180 - S
181 - S
182 - U
183 - (X LEVER) (it's been reset)
184 - PULL LEVER WITH UMBRELLA
185 - S (door closes behind you)
186 - E (make sure you're still wearing raincoat, gloves & boots, & umbrella is open)
187 - E
188 - S
189 - E
190 - PUT LADDER IN PIT
191 - D (the professor is here)
192 - (X PROFESSOR) (he's emaciated)
193 - GIVE BOWL TO PROFESSOR (he's nourished by magic potion, he'll now follow you)
194 - U (professor follows)
195 - E (professor follows)
196 - TOUCH SPHERE (you're both transported back to the lab)