This game is an inexpensive, but solid option iin the Old School gaming field.
Right up front, let me say that the game could use another editorial pass. In the descriptions of Chrisma and Wisdom it says you get an XP bonus if your stat is 13+. At the beginning of the section, it explains that stas go from -2 to +2. So obviously, someone didn't finish cleaning up some of those old references. But I will also say that sort of thing is piddly-tosh and not what would frighten a bold adventurer.
As it stats in the product description, Dungeon Questing is pretty much BX D&D, based on a 2d6 system instead of using a d20. If that sounds like your kind of game, then Dungeon Questing is for you. The rules are complete - as complete as any BX style game - with monsters and treasure and spells and everything else you need.
Dungeon Questing does not use character classes - though their is an optional appendix to do so - but instead uses a skill system that lets you build your own character as you see fit. If you do not like skill systems, then you may have a problem here, though I think you could probaby simply the game another step and eliminate most of the skills with little problem.
At $2.50 for 162 pages, this is a fantastic bargain and a must have for anyone who wants to play Old School D&D, but wants to ditch the d20.