West of the yellow door is a hallway with two switches at the west end.
Hit both switches; some doors will open to the north and south.
The area to the north has ammo and a shield (#1); the area to the
south has ammo and an urn (#2).
Southwest of the blue door is a walk-through wall, just between the
banners. Behind the wall is a hallway (#3) leading to some ammo,
an egg, and those annoying ophidians that have been shooting at you.

Go through the green door and walk into the water; this will open some
secret doors west of the hallway you just left. Go back and go into
the secret areas to the north and south; they contain some ammo,
a possible mace, a shadowsphere (#8), and a tome (#9).
Go to the top of the steps at the south side of the maulotaur pool
east of the green door. This will lower the pool, revealing an area
to the north (#10). It contains wings, ammo, and a teleporter back
up to the top of the steps.
In the west side of the pool in the starting area, in the northwest
corner, is a quiver. West of the quiver is a secret door which
contains a ring of invincibility and a teleporter to a ledge in the
east part of the pool, which has a hellstaff, some ammo, and health.
1 23 <fb400000, 6020000> (-1216, 1538) 2 9 <fa970000, 3d40000> (-1385, 980) 3 213 <f7a80000,fc450000> (-2136, -955) 4 11 <fc800000, 3600000> ( -896, 864) 5 74 <fba40000,fc200000> (-1116, -992) 6 85 <fef00000,fb740000> ( -272, -1164) 7 54 < 1e90000,fac20000> ( 489, -1342) 8 122 <f6d00000, 2e00000> (-2352, 736) 9 223 <f6d00000,fee00000> (-2352, -288) 10 107 <f9aa0000, 2080000> (-1622, 520)