After discussing it in another thread, I decided to post this mortem after all...
I'll try to keep it insightful and entertaining, but as usual I'll include headings to help you skip the boring bits. ;)
Core victory reasons
This victory was mainly down to paying lots of attention to enemy health levels, and armour management strategy. Namely, switching between a P-red armour, energy shield, Fireproof red armour, and a ballistic duelist armour, to defend against general attacks, plasma/acid, fire, or melee attacks, respectively. More than any other, though, I found that switching to a suit of nanofibre red almost every time my berserk activated gave me all the defense I needed, and kept all my 'special' armours healthy for when I needed them - it's amazing just how much damage you take in strongman diamond.
Armour musings
Nanofibre red is very easy to make, and so is fireproof red. Ballistic armour is a must, for me, any time I find an armour with inbuilt melee resistance (duelist, ballistic, etc). Those 3, alone, are pretty much enough to make it through the whole game, especially if you P-mod your nanofibre before you B-mod it and keep using the 100%-75% range of it until you run out of 'disposable' armour and take the plunge to turn it into nanofibre. It's shocking just how little damage P-modded red takes - for most of the game it takes less damage than it recovers from armour shards! Likewise, B-mod a red and use it all the way to <50% before you put the T mod on for fireproof. Between those two modding orders, my armour was pretty strong in every attempt, but there does come a point where getting nanofibre seems ideal (about when archviles, mancubi, and revenants start showing up everywhere).
The build
The particular build didn't seem that important beyond the anomoly, but prior to that, getting a third level of brute before berserker increased my chance of getting a marine through the early game LOADS, like, doubled the chances or something! Basically, brute 1 is good for fighting humans, brute 2 lets you single-tap imps with the pistol to get them to chase you round a corner, and finish them with a fist to take zero damage. Brute 3 is pretty much necessary to have any kind of a chance of killing a demon or hell knight without taking a load of attacks (I shotgun them until they're heavily wounded or above, and then pistol them to mortally wounded if I get a chance). Actually activating berserker (4 melee attacks) is pretty rare if you're wounding monsters with guns prior to hitting them, and you take too much damage in the early game (pre red armour) NOT to wound monsters before finishing them.
After vampyre, the whole game flips, and becomes pretty much a walk in the park until hell, at which point decent armour management is necessary, but there's nothing particularly difficult about getting your win after you get vampyre. Not that it means getting your badge most of the time, though. Kornel should just re-describe this challenge as:
'win the game with just a fist,
then roll a dice and get a 6',
- It would feel less frustrating! :D
[edit - especially notable given tormuse's report (a version ago) of getting strongman diamond without getting platinum! ]
Special levels
Also worth noting is my tackling the arena. I found the large medikit well worth the 1-2 small medikits I'd typically use completing it, and the blue armour allows me to tackle the chained court without any significant cost (maybe 1 small medikit). If, however, things seems difficult, skipping the arena's last wave still gets you the large medikit, and you get an additional a small medikit that you would not otherwise get, which can help get a character back into the game, provides a much easier chained court (no arena master), and only struggles if you get phobos lab instead of military base (where the rocket launcher is really valuable against the demons!)
This time, though, I got a full clear on the arena, a straightforward chained court, and rolled military base, which can be cleared completely with giftdropping. That's pretty much ideal, but not particularly rare.
Oh, Hell's armoury is *so* much nicer than phobos lab, but a melee build can typically handle either of them without any worries. 2 shamblers aren't any trouble for a berserker!
I only did the vaults because I'd just picked up 2 invulnerabilty globes, otherwise I'd probably skip them (approaching revenants on foot is suicide, shooting at them is risky in a strongman challenge).
Similarly, I entered Dis with invulnerability, but decided not to use the nuke, just in case my own death would fail me on the challenge (wasn't sure how it's tracked).
Run summary
Overall, I'm very glad to finally have gained this badge. Making sure *not* to kill monsters* doesn't feel very doomrl, and while I welcomed the change at first, I was getting pretty eager for a return to 'usual' play after a couple of nights of this. The headache is hugely increased when you can get disqualified without knowing what went wrong, and continue playing, which ended up being incredibly disheartening even on this successful run (I was fairly sure I would not get a badge at the end, for some infraction I was unaware of). This resulted in my sense of relief being greater than my sense of acheivement when I finally read the mortem. That is, 'thank god I don't have to do that again'. :)
*: at range.
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DoomRL (0.9.9.7) roguelike post-mortem character dump
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Sylph, level 11 Arch-Vile Mjr General Marine,
defeated the Mastermind at the City of Dis.
He survived 759458 turns and scored 167114 points.
He played for 2 hours, 23 minutes and 27 seconds.
He wasn't afraid to be hurt plenty.
He killed 698 out of 698 hellspawn. (100%)
This ass-kicking marine killed all of them!
-- Special levels --------------------------------------------
Levels generated : 11
Levels visited : 6
Levels completed : 6
-- Awards ----------------------------------------------------
Cyberdemon's Head
Medal of Prejudice
Sunrise Iron Fist
Hell Armorer Badge
Hell Champion Medal
Strongman Gold Badge
Strongman Platinum Badge
Strongman Diamond Badge
-- Graveyard -------------------------------------------------
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-- Statistics ------------------------------------------------
Health 107/60 Experience 59906/11
ToHit Ranged +0 ToHit Melee +6 ToDmg Ranged +0 ToDmg Melee +9
-- Traits ----------------------------------------------------
Class : Marine
Finesse (Level 2)
Tough as nails (Level 2)
Brute (Level 3)
Berserker (Level 1)
Badass (Level 2)
Vampyre (Level 1)
Bru->Bru->Bru->Ber->Bad->MVm->TaN->Bad->Fin->Fin->TaN->
-- Equipment -------------------------------------------------
[a] [ Armor ] red armor [6/6] (57%) (P)
[b] [ Weapon ] nothing
[c] [ Boots ] tactical boots [0/0] (100%)
[d] [ Prepared ] pistol (2d4) [6/6]
-- Inventory -------------------------------------------------
[a] missile launcher (6d6) [4/4]
[b] fireproof red armor [4/4] (100%)
[c] nanofiber red armor [2]
[d] ballistic duelist armor [2/2] (100%)
[e] energy shield [0/0] (100%)
[f] chainsaw (4d6)
[g] rocket (x10)
[h] large med-pack
[i] large med-pack
[j] large med-pack
[k] large med-pack
[l] large med-pack
[m] large med-pack
[n] large med-pack
[o] large med-pack
[p] large med-pack
[q] homing phase device
[r] homing phase device
[s] envirosuit pack
[t] thermonuclear bomb
[u] bulk mod pack
[v] plasteel boots [2/2] (100%)
-- Resistances -----------------------------------------------
Bullet - internal 60% torso 60% feet 60%
Melee - internal 60% torso 60% feet 60%
Shrapnel - internal 60% torso 60% feet 60%
Acid - internal 60% torso 60% feet 60%
Fire - internal 60% torso 85% feet 60%
Plasma - internal 60% torso 60% feet 60%
-- Kills -----------------------------------------------------
107 former humans
79 former sergeants
27 former captains
64 imps
59 demons
198 lost souls
35 cacodemons
24 hell knights
18 barons of hell
5 arachnotrons
6 former commandos
14 pain elementals
26 revenants
9 mancubi
8 arch-viles
5 elite former humans
5 elite former sergeants
2 elite former captains
2 bruiser brothers
1 shambler
1 Angel of Death
1 Cyberdemon
1 Spider Mastermind
1 Arena Master
-- History ---------------------------------------------------
He started his journey on the surface of Phobos.
On level 2 he entered Hell's Arena.
He left the Arena as a champion!
On level 5 he stormed the Chained Court.
He defeated the Hell Arena Master!
On level 5 he found the Arena Master's Staff!
On level 7 he marched into the Military Base.
On level 7 he assembled a tactical boots!
He purified his fellow comrades.
On level 8 he encountered the Phobos Anomaly.
On level 9 he entered Hell's Armory.
He destroyed the evil within and reaped the rewards!
On level 14 he assembled a ballistic armor!
On level 16 he found the Tower of Babel!
On level 17 he invaded the Unholy Cathedral!
On level 17 he found the Azrael's Scythe!
He then destroyed the Unholy Cathedral!
On level 18 he assembled a fireproof armor!
On level 18 he assembled a nanofiber armor!
On level 19 he entered the Vaults.
He cracked the Vaults and cleared them out!
Then at last he found Dis!
On level 24 he finally defeated the Mastermind.
-- Messages --------------------------------------------------
berserk! You need to taste blood!
You swap your weapons. You are hit! You are hit! You are hit! You are hit!
You are hit! You are hit! You need to taste blood!
You swap your weapons. You need to taste blood!
You are hit! Boom! You are hit! You dodge! Boom! You are hit! Boom! You need
to taste blood!
You hit the Spider Mastermind. The Spider Mastermind flinched! You need to
taste blood!
You hit the Spider Mastermind. The Spider Mastermind flinched! You need to
taste blood!
The Spider Mastermind hits you. You need to taste blood!
You hit the Spider Mastermind. The Spider Mastermind flinched! You need to
taste blood!
You hit the Spider Mastermind. The Spider Mastermind dies. Congratulations!
You defeated the Spider Mastermind! Press <Enter>...
You feel relatively safe now. You're going berserk!
-- General ---------------------------------------------------
276 brave souls have ventured into Phobos:
225 of those were killed.
7 didn't read the thermonuclear bomb manual.
And 12 couldn't handle the stress and committed a stupid suicide.
32 souls destroyed the Mastermind...
1 sacrificed itself for the good of mankind.
26 killed the bitch and survived.
5 showed that it can outsmart Hell itself.
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