So I played Inferno mod again, trying to win UV with a non-melee build, which is feeling more and more overly ambitious.  Nevertheless, I got even further than my previous game.  :)
In Singularity, I used the invisibility effect granted by the Shadow Aegis to sneak past enemies and shut down two of the portals, but I was overwhelmed before I could get to the other two and had to leave early.  Up 'til that point, I had 100% kills.
In Acheron, I was doing okay for a while, but couldn't get to the last few(?) Arch-Viles and I realized that the bodies being raised from the river, in addition to not giving you experience, don't even drop any ammo!  So I was depleting my resources without any gain.  Once I ran out of med packs, I decided it was time to homing phase out.  The fact that ammo is limited neatly highlights the fact that melee builds have a *huge* advantage in this mod.  As much as I'd like to prove that it's doable without melee, I might just try a melee build next.
In the end, the opposition in Ptolomea was just too much for me.  I tried to homing phase out, but for some reason, it didn't teleport me to the exit.  I was surrounded with no cover and died very quickly.
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 DoomRL (0.9.9.7) roguelike post-mortem character dump
 Module : Inferno (0.16.0)
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 Tormuse, level 10 Technician,
 was incinerated by an arch-vile in Ptolomea.
 He survived 324722 turns.
 He played for 8 hours, 58 minutes and 57 seconds.
 He was a man of Ultra-Violence!
 He killed 1459 out of 1579 hellspawn. (92%)
-- Special levels --------------------------------------------
  Name               Result       Kills   Turns      Time
  Hell Keep          Complete   38/  38   15270     3m52s
  The Spawning Pits  Complete  100/ 100   55001  1h23m46s
  Erebus             Complete   31/  31    5953    16m23s
  Singularity        Escaped    81/ 106    3744    11m16s
  The Acheron        Escaped    89/ 133    6219    19m17s
  Infernal Sanctuary Complete  142/ 142    9847    17m21s
  Ptolomea           Death       8/  59     219     6m11s
  Hellfire Furnace   Complete   18/  18     267     2m04s
-- Awards ----------------------------------------------------
  Siege Token
  -- Cleared the Hell Keep on UV
  Shadow Medal
  -- Defeated the shadow demon
  Ruby Heart
  -- Defeated the lava witch
-- Graveyard -------------------------------------------------
  ###########################################################
  ###########################################################
  ...A...#........%.............A.#....V.####################
  .A...A.#.......................M#...M..####################
  ...A...#........................#.B....####################
  .A...A.#...........MR.......V...#...M..####################
  ##############..###.B.###A.#B.A.#.B....####################
  ##..>..#######...|..A..|||.#B|..#U....M.||#################
  ##.....#######.......+..........#.......||#################
  ##...........#.........A||.....|#...M...||#################
  ##.....#######.....R.+....;.....#.......||#################
  ##..>..#######.......|...|.#...M#U....M.||#################
  ##############..###...###.B#....#.B....####################
  .A...A.#^....R.|......A.........#...M..####################
  ...A...#..............M.........#.B....####################
  .A...A.#...............V........#...M..####################
  ...A...#.........B............X.#....V.####################
  ###########################################################
  ###########################################################
  ###########################################################
-- Statistics ------------------------------------------------
  Health 0/50    Experience 48446/10
  ToHit Ranged +4  ToDmg Ranged +2
  ToHit Melee  +0  ToDmg Melee  +0
-- Traits ----------------------------------------------------
  Class : Technician
    Finesse          (Level 1)
    Hellrunner       (Level 1)
    Son of a bitch   (Level 2)
    Eagle Eye        (Level 2)
    Juggler          (Level 1)
    Intuition        (Level 1)
    Whizkid          (Level 2)
  EE->SoB->SoB->HR->Fin->WK->WK->Jug->EE->Int->
-- Equipment -------------------------------------------------
    [a] [ Armor      ]   nothing
    [b] [ Weapon     ]   rocket launcher (6d6) [0/1] (B1)
    [c] [ Boots      ]   tactical boots [0/0] (100%) (A)
    [d] [ Prepared   ]   10mm ammo chain (x138)
-- Inventory -------------------------------------------------
    [a] tactical shotgun (8d3) [5/5] (T1)
    [b] gatling gun (1d7)x6 [60/60]
    [c] hyperblaster (2d4)x3 [31/40]
    [d] BFG 9000 (10d6) [20/100]
    [e] bullet-proof vest [1/1] (44%)
    [f] Ruby Heart [0/0] (95%)
    [g] 10mm ammo (x130)
    [h] shotgun shell (x70)
    [i] shotgun shell (x50)
    [j] rocket (x13)
    [k] power cell (x70)
    [l] power cell (x70)
    [m] agility mod pack
    [n] Shadow Aegis
    [o] protective boots [4/4] (100%) (APT)
    [p] 10mm ammo chain (x250)
    [q] power battery (x120)
-- Resistances -----------------------------------------------
    None
-- Kills -----------------------------------------------------
    72 former humans
    49 former sergeants
    36 former captains
    208 imps
    68 demons
    242 lost souls
    136 cacodemons
    27 hell knights
    68 barons of hell
    59 arachnotrons
    55 former commandos
    26 pain elementals
    28 revenants
    43 mancubi
    14 arch-viles
    16 nightmare imps
    3 nightmare cacodemons
    9 nightmare demons
    1 lava witch
    66 spectres
    1 shadow demon
    74 hydras
    63 hydra queens
    25 achlyses
    36 cinders
    34 asuras
-- History ---------------------------------------------------
  He selected the standard loadout.
  He began his journey by storming Hell Keep...
  He left no survivors!
  On Hell 6 he entered The Spawning Pits...
  There he discovered the Aegis.
  He slew the hydra queen!
  On Hell 8 he raided the Hellfire Furnace!
  He nuked Hell 11!
  On Hell 11 he descended into Erebus...
  There he discovered the Staff of Souls.
  He banished the shadow demon!
  On Hell 12 he assembled a tactical boots!
  On Hell 12 he assembled a hyperblaster!
  On Hell 12 he found the Shadow Aegis!
  On Hell 12 he approached the Singularity...
  He escaped before hell's forces grew too numerous.
  On Hell 13 he assembled a tactical shotgun!
  He reached the banks of the Acheron.
  Entering Hell 16 he was almost dead...
  On Hell 16 he assembled a gatling gun!
  On Hell 18 he discovered The Infernal Sanctuary.
  There he claimed Ruby Heart.
  He defeated the lava witch!
  On Hell 20 he anwsered the call of Ptolomea...
-- Messages --------------------------------------------------
 Targeting canceled. 
 You use a homing phase device. You feel yanked in a non-existing direction! 
 You see : Tormuse (severely wounded) | blood | [ m ]ore 
 You prepare the BFG 9000 instantly! 
 Fire -- Choose target... 
 You see : an arachnotron (unhurt) | floor | [ m ]ore 
 The missile hits the arachnotron. The revenant dies. The arch-vile raises his 
 You see : a baron of hell (unhurt) | power cell (x20) | floor | [ m ]ore 
 You dodge! Boom! You dodge! Boom! You dodge! Boom! You dodge! Boom! You 
 dodge! Boom! 
 You prepare the rocket launcher instantly! 
 Fire -- Choose target... 
 You see : an arachnotron (severely wounded) | floor | [ m ]ore 
 The missile hits the arachnotron. You hear the scream of a freed soul! You 
 hear the scream of a freed soul! The arachnotron dies. You are engulfed in 
 flames! You die!... Press <Enter>... 
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