Attempted to get a 100% killrate, then Dragonslayer spawned in UC, and this was the first time ever I've managed to wield it as well. However after this I realised I had no idea how to get a reliable 100% (corpse-clearing) rate with a melee weapon, let alone Dragonslayer, even if it's possible I have no experience with this and the corresponding armor artefact, so I opted for a minimal damage run instead (had already taken some damage including UC), stocking up on phase devices and enviropacks as much as I could.
After getting the Berserker Armor from the Mortuary, 100% would've seemed even farther away anyway, Nightmare Demons were everywhere, I couldn't find a limit to their numbers and corpse-clearing was a total non-factor.
Finding nukes also became a priority as I realised that I didn't know how to overload nuclear weapons while wielding the Dragonslayer.
The Apostle was also much more resilient than I expected (3 strikes with the Dragonslayer and he was still smiling).
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DoomRL (v.0.9.9.6G) roguelike post-mortem character dump
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Dave, level 18 Imp Sergeant Major Scout,
nuked the Mastermind on level 9 of Hell.
He survived 369312 turns and scored 986767 points.
He played for 8 hours, 46 minutes and 36 seconds.
He opposed the Nightmare!
He killed 1462 out of 1606 hellspawn. (91%)
He held his right to remain violent.
-- Special levels --------------------------------------------
Levels generated : 11
Levels visited : 11
Levels completed : 11
-- Awards ----------------------------------------------------
Cyberdemon's Head
UAC Star (gold cluster)
Gambler's Shield
Conqueror Badge
Untouchable Medal
Grim Reaper's Badge
Hell Arena Pwnage Medal
Shambler's Head
Apostle Insignia
Gatekeeper Platinum Badge
Gatekeeper Diamond Badge
UAC Gold Badge
UAC Platinum Badge
Veteran Platinum Badge
Veteran Diamond Badge
Elite Platinum Badge
Elite Diamond Badge
Demonic Platinum Badge
Demonic Diamond Badge
Scavenger Diamond Badge
Arena Silver Badge
Arena Platinum Badge
Longinus Platinum Badge
-- Graveyard -------------------------------------------------
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-- Statistics ------------------------------------------------
Health 50/50 Experience 166686/18
ToHit Ranged +0 ToHit Melee +10 ToDmg Ranged +0 ToDmg Melee +15
-- Traits ----------------------------------------------------
Class : Scout
Finesse (Level 3)
Hellrunner (Level 3)
Brute (Level 5)
Berserker (Level 1)
Dodgemaster (Level 1)
Intuition (Level 2)
Whizkid (Level 2)
Blademaster (Level 1)
HR->HR->DM->Bru->Bru->Ber->Bru->MBm->Fin->Fin->WK->WK->Int->Int->HR->Fin->Bru->Bru->
-- Equipment -------------------------------------------------
[a] [ Armor ] Berserker Armor [4]
[b] [ Weapon ] Dragonslayer (9d9)
[c] [ Boots ] antigrav plasteel boots [2/2] (98%) (A)
[d] [ Prepared ] nothing
-- Inventory -------------------------------------------------
[a] large med-pack
[b] large med-pack
[c] large med-pack
[d] phase device
[e] phase device
[f] Arena Master's Staff
-- Resistances -----------------------------------------------
Bullet - internal 60% torso 60% feet 60%
Melee - internal 60% torso 60% feet 60%
Shrapnel - internal 60% torso 60% feet 60%
Acid - internal 85% torso 85% feet 95%
Fire - internal 85% torso 85% feet 95%
Plasma - internal 60% torso 60% feet 60%
-- Kills -----------------------------------------------------
82 former humans
81 former sergeants
51 former captains
197 imps
81 demons
297 lost souls
31 cacodemons
30 hell knights
56 barons of hell
70 arachnotrons
22 former commandos
39 pain elementals
44 revenants
40 mancubi
48 arch-viles
4 nightmare imps
4 nightmare cacodemons
275 nightmare demons
2 bruiser brothers
1 shambler
1 lava elemental
1 agony elemental
1 Angel of Death
1 Cyberdemon
1 Spider Mastermind
1 Arena Master
1 Apostle
-- 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 4 he stormed the Chained Court.
On level 4 he found the Arena Master's Staff!
He defeated the Hell Arena Master!
On level 5 he assembled a tactical armor!
On level 7 he witnessed the Wall.
He massacred the evil behind the Wall!
On level 8 he encountered the Phobos Anomaly.
On level 10 he entered Hell's Armory.
He destroyed the evil within and reaped the rewards!
On level 11 he ventured into the Halls of Carnage.
On level 13 he found the City of Skulls.
On level 13 he assembled a antigrav boots!
He wiped out the City of Skulls.
On level 14 he ventured into the Spider's Lair.
He cleared the Lair, kickin' serious spider ass!
On level 16 he found the Tower of Babel!
On level 17 he invaded the Unholy Cathedral!
He then destroyed the Unholy Cathedral!
On level 19 he entered the Vaults.
He managed to clear the Vaults completely!
On level 20, hell froze over!
He left level 20 as soon as possible.
On level 20 he was foolish enough to enter the Mortuary!
He nuked level 20!
On level 20 he found the Berserker Armor!
He managed to clear the Mortuary from evil!
On level 22 he entered the Lava Pits.
He managed to clear the Lava Pits completely!
Then at last he found Dis!
He nuked level 24!
He defeated the Mastermind and found the TRUE EVIL!
Then finally in hell itself, he killed the final EVIL.
-- Messages --------------------------------------------------
You need to taste blood!
You need to taste blood!
You need to taste blood!
You need to taste blood!
You need to taste blood!
You need to taste blood!
You need to taste blood!
You need to taste blood!
You need to taste blood!
You need to taste blood!
You need to taste blood!
You see : a Apostle (almost dead) | floor | [ m ]ore
You hit the Apostle. The Apostle dies. Congratulations! You defeated the
Apostle! Press <Enter>...
Next!
You hit the nightmare demon. The nightmare demon dies. Next!
-- General ---------------------------------------------------
2 brave souls have ventured into Phobos:
2 souls destroyed the Mastermind...
2 showed that it can outsmart hell itself.
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