track eight more achievements

Record reaching experience level 3, 6, 10, 14, 18, 22, 26, and 30,
the levels where the character gets a new rank title, and report
those as achievements at end of game.  These achievements persist
even if enough levels to lose a rank are lost, and if lost ranks
are regained the original achievement is the one that gets tracked
and disclosed.

doc/Guidebook.tex

@@ -3107,7 +3107,7 @@ attained.
 They aren't directly related to {\it conduct\/} but are grouped with
 it because they fall into the same category of ``bragging rights''
 and to limit the number of questions during disclosure.
-Listed roughly in order of difficulty and not necessarily in the order
+Listed here roughly in order of difficulty and not necessarily in the order
 in which you might accomplish them.
 
 % [length stuff copied from paranoid_confirmation]
@@ -3117,6 +3117,8 @@ in which you might accomplish them.
 \addtolength{\achwidth}{\labelsep}
 \blist{\leftmargin \achwidth \topsep 1mm \itemsep 0mm}
 %.PL Shop
+\item[{\tt <Rank>}]
+Attained rank title <Rank>.
 \item[{\tt Shop}]
 Entered a shop.
 \item[{\tt Temple}]
@@ -3169,6 +3171,17 @@ Delivered the Amulet to its final destination.
 \noindent
 Notes:
 
+%.pg
+Achievements are recorded and subsequently reported in the order in which
+they happen during your current game rather than the order listed here.
+
+%.pg
+There are nine {\it <Rank>\/} titles for each role, bestowed at experience
+levels 1, 3, 6, 10, 14, 18, 22, 26, and 30.
+The one for experience level 1 is not recorded as an achievement.
+Losing enough levels to revert to lower rank(s) does not discard the
+corresponding achievement(s).
+
 %.pg
 The ``special items'' hidden in {\it Mines'~End\/} and (\it Sokoban\/}
 are not unique but are considered to be prizes or rewards