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.

Make sure you talk to the big burly man and ask him about himself to find out that his name is Achmed. Ask Achmed about everything you've learnt, as he's a mine of information.

There's a desert maze near the beginning, but this is easy to map in the conventional manner by dropping objects to make each location unique. However, there's also a thirst daemon, so your first priority should be to find and drink water. Achmed can help you with general directions if you ask him about the desert, oasis or water.

001 - X TABLE (you find a chisel)
002 - GET CHISEL
003 - S
004 - E
005 - (E) (a man jumps out and blocks your progress, he's a mine of information)
006 - (X MAN)
007 - (TALK TO HIM) (he seems friendly, you aren't allowed in ruins for your safety)
008 - (ASK HIM ABOUT HIMSELF) (his name is Achmed)
009 - (ASK HIM ABOUT ACHMED, ANUBIS, CROCODILES, CUSTOMS, DESERT, EL RAJID, FESTIVAL, GHOST, GODS, LEGEND, ME, MEDALLION, NILE, OASIS, PALACE, PHARAOH, PYRAMID, RA, SIMHEL, SINUHE and synonyms)
010 - IN
011 - GET FLASHLIGHT
012 - (OPEN BOOK) (something falls out)
013 - (L) (it was a checklist)
014 - (X CHECKLIST) (you should read it)
015 - (READ IT) (you need a light source, firearm, chisel, knife and rations)
016 - GET PISTOL
017 - OUT
018 - W
019 - S
020 - S (here's where the desert starts)
021 - W
022 - N
023 - N
024 - N
025 - (X NOMAD) (you should search him for concealed weapons)
026 - SEARCH NOMAD (you find a canteen)
027 - GET CANTEEN
028 - (X IT) (it's closed)
029 - S
030 - S
031 - W
032 - OPEN CANTEEN
033 - FILL IT WITH WATER
034 - DRINK WATER (your thirst is now quenched)
035 - E
036 - S
037 - E
038 - E
039 - N
040 - N
041 - GET KNIFE
042 - S (there's something sticking out of the sand)
043 - (X SOMETHING) (it's the tip of a pyramid)
044 - S
045 - W
046 - W
047 - S
048 - (X CAMEL) (it's got a broken leg)
049 - SHOOT CAMEL WITH PISTOL
050 - CUT CAMEL WITH KNIFE (you cut a huge chenk of flesh from camel's rump)
051 - GET MEAT
052 - E
053 - E
054 - N, S, E or W (you fall into a hole)
055 - (D or JUMP) (it's too dark down there)
056 - LIGHT FLASHLIGHT
057 - D (you drop everything)
058 - DIG DEBRIS (you expose remains of archaeologist)
059 - (X BODY) (try searching him)
060 - SEARCH BODY (you find a lighter)
061 - GET ALL (lighter, chisel, flashlight, pistol, canteen, knife and meat taken)
062 - E
063 - E (you trip over something)
064 - STAND ON SLAB (it lowers to floor level and crack appears)
065 - PUT KNIFE IN CRACK
066 - W (the knife prevents the slab rising back again)
067 - N (there's now an opening here)
068 - E
069 - (X SARCOPHAGUS) (lid is sealed to sarcophagus)
070 - (GET STAFF) (it's too tight and you can't get your fingers around it)
071 - PRY STAFF WITH CHISEL (you place it on the lid)
072 - GET STAFF
073 - BREAK SEAL WITH CHISEL (you break the seal)
074 - (DROP CHISEL)
075 - PRY LID WITH STAFF (lid crashes to floor)
076 - (L) (the sarcophagus contains a mummy and a helmet)
077 - GET HELMET
078 - WEAR IT (to protect you from cave-in)
079 - W
080 - S
081 - W
082 - W
083 - W
084 - (GET SPADE) (you can't get to it because of the snakes, clear a path first)
085 - PUSH BRAZIER WITH STAFF (it falls to ground and oil spills over floor)
086 - LIGHT LIGHTER
087 - BURN OIL WITH LIGHTER (the snakes move away from the flames)
088 - (EXTINGUISH LIGHTER)
089 - (DROP LIGHTER)
090 - GET SPADE
091 - E
092 - E
093 - E
094 - N
095 - N
096 - W
097 - N
098 - (N) (you can't get past the bats)
099 - SHOOT BATS WITH PISTOL (plaster rains down on you, helmet protects your head)
100 - (N) (you can't get through the debris)
101 - DIG DEBRIS WITH SPADE (you clear a path)
102 - N
103 - (D) (you can't get through the debris)
104 - DIG DEBRIS WITH SPADE (you clear a path)
105 - (DROP SPADE)
106 - D
107 - (X BONES) (you can't get close enough to examine it properly due to crocodiles)
108 - THROW MEAT TO CROCODILES
109 - X BONES (you find a medallion)
110 - GET MEDALLION
111 - (X IT) (it's dirty)
112 - CLEAN IT (it's now shiny)
113 - U
114 - S
115 - S
116 - E
117 - N
118 - (X WALL) (image of priest shows line reflected off his cupped hands)
119 - PULL LEVER (a beam of light appears)
120 - REFLECT BEAM WITH MEDALLION (or LIFT/RAISE MEDALLION) (passage appears to east)
121 - E