I did a not-so-comprehensive comparison between the two and this is what I came up with...
1. Illustrations on Page 2 of
D1 and
D1-2 are different. D1 shows adventuring party by and crane and rope bridge with donkey by DCS, while
D1-2 shows a stalagmite filled cavern by Erol Otus.
2. Information about Dark Elves is provided in
D1-2 while
D1 states that information is available in
G1. (page 3, 8th paragraph)
3. About a 1/4 of an inch is missing from the the bottom of the illustration on page 3 of
D1-2 and the DCS signature is moved higher on the stalagmite.
4. D1-2 is missing the illustrations on page 4, 5 and 6 of
D1. The missing graphics allow the text to be compressed onto just page 4 and 5.
5. Page 6 of
D1-2 now contains a large new illustration of a Drow by DCS and the sections "REGARDING THE LARGE-SCALE HEX MAP OF THE UNDERWORLD" and the newly named "SMALL SCALE ENCOUNTER PIECES AND PASSAGE MAPS" from page 11 of
D1.
6. The section "Special note regarding Drow Cloaks, Armor and Weapons" moved from page 6 to page 5. Missing paragraph on Drow Poison:
Drow sleep poison decays instantly in sunlight. Its power is lost after about 60 days in any event, and the coating on the small bolts and javelins must be periodically renewed with fresh applications of the fungoid substance. The Dark Elves will oven have small barrels filled with several packets of this poison, each sealed to insure the poisonous substance remains fresh for about 1 year.
7. As in the initial post in this thread, the "Troll and Troglodyte", "Ghast and Ghoul", "Bugbear and slave", "Beholders" , "Shadow" and "Wererat and Illithid" sections are missing from page 6.
8. Illustration of the lich Asberdies on page 7 of
D1-2 and
D1 is reversed.
9. Illustration of battle with trolls on page 11 of
D1 is replaced by illustration of two dragons by Erol Otus in
D1-2.
10. The Shrine of the Kua-Toa chapter of
D1-2 is missing the "caution" section from page 2 of
D2 and is replaced with 2 new illustrations; a troll and an adventuring party in a grotto.
11. "Notes for the Dungeon Master" section in The Shrine of the Kua-Toa chapter of
D1-2 is missing first paragraph which describes movement speed. The missing section is very similar to one included in the "Notes for the Dungeon Master" chapter of Descent into the Depths of the Earth although slightly reworded.
12. The text from pages 3, 4 and 5 of
D2 is condensed onto page 13 of
D1-2. The tables and descriptions relating to Drow are missing since they duplicate information presented in the Descent into the Depths of the Earth chapter.
13. An illustration on page 3 of an umberhulk is replaced with one of three kou-toa and an illustration of ropers attacking a party is missing.
14. Page 6 of
D2 is not numbered.
15. The illustration of two adventurers resting on page 13 of
D2 is replaced with larger illustration of a larger party with a drow captive.
15. D1-2 adds tables on pages 21 and 22 showing the stats, equipment and spells of the original tournament characters.
16. D1-2 adds a monster manual style entry on pages 23 and 24 for the Drow and includes a small illustration.
17. The detail in the illustration of the Kua-toan / Svirfneblin battle is much better in
D2, the stalagmites are hardly noticable in
D1-2.
18. The Svirfneblin monster manaul style entry on page 16 of
D2 is missing the namer, page 28 of
D1-2 corrects this.
