Tried to do the N! 90% thing, but got to hell 7 and it was too scary to camp to boost kill rate, so I just went and killed the spider.
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DoomRL (0.9.9.7) roguelike post-mortem character dump
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Nathan, level 9 Arch-Vile Chaos Lt. Colonel Scout,
defeated the Mastermind at the City of Dis.
He survived 19849 turns and scored 332758 points.
He played for 23 minutes and 57 seconds.
He opposed the Nightmare!
He killed 316 out of 856 hellspawn. (36%)
-- Special levels --------------------------------------------
Levels generated : 11
Levels visited : 3
Levels completed : 1
-- Awards ----------------------------------------------------
Cyberdemon's Head
Major Icarus Cross
Compet-n Silver Cross
-- Graveyard -------------------------------------------------
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-- Statistics ------------------------------------------------
Health 32/50 Experience 38220/9
ToHit Ranged +0 ToHit Melee +6 ToDmg Ranged +0 ToDmg Melee +9
-- Traits ----------------------------------------------------
Class : Scout
Hellrunner (Level 2)
Brute (Level 3)
Berserker (Level 1)
Intuition (Level 2)
Blademaster (Level 1)
Int->Bru->Bru->Ber->HR->HR->Bru->MBm->Int->
-- Equipment -------------------------------------------------
[a] [ Armor ] red armor [4/4] (67%)
[b] [ Weapon ] Longinus Spear (8d8)
[c] [ Boots ] Enviroboots [0]
[d] [ Prepared ] shotgun (8d3) [1/1]
-- Inventory -------------------------------------------------
[a] double shotgun (9d3)x2 [2/2]
[b] chaingun (1d6)x4 [40/40]
[c] plasma rifle (1d7)x6 [40/40]
[d] green armor [1/1] (100%)
[e] red armor [1/6] (18%) (P)
[f] chainsaw (4d6)
[g] shotgun shell (x50)
[h] shotgun shell (x50)
[i] shotgun shell (x50)
[j] shotgun shell (x50)
[k] rocket (x10)
[l] rocket (x10)
[m] power cell (x50)
[n] small med-pack
[o] small med-pack
[p] large med-pack
[q] phase device
[r] envirosuit pack
[s] agility mod pack
[t] agility mod pack
[u] steel boots [1/1] (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 100%
Fire - internal 60% torso 85% feet 100%
Plasma - internal 60% torso 60% feet 60%
-- Kills -----------------------------------------------------
38 former humans
33 former sergeants
20 former captains
58 imps
32 demons
70 lost souls
4 cacodemons
5 hell knights
12 barons of hell
13 arachnotrons
2 former commandos
3 pain elementals
4 revenants
6 mancubi
9 arch-viles
4 nightmare demons
1 Angel of Death
1 Cyberdemon
1 Spider Mastermind
-- History ---------------------------------------------------
He started his journey on the surface of Phobos.
On level 5 he stormed the Chained Court.
On level 8 he encountered the Phobos Anomaly.
He left level 13 as soon as possible.
He left level 15 as soon as possible.
On level 16 he found the Tower of Babel!
On level 17 he invaded the Unholy Cathedral!
On level 17 he found the Longinus Spear!
He then destroyed the Unholy Cathedral!
He left level 18 as soon as possible.
He left level 19 as soon as possible.
On level 20 he encountered an armed nuke!
On level 20 he was foolish enough to enter the Mortuary!
He managed to escape from the Mortuary!
On level 21 he found the Enviroboots!
Then at last he found Dis!
On level 24 he finally defeated the Mastermind.
-- Messages --------------------------------------------------
You need to taste blood!
You need to taste blood!
You miss the Spider Mastermind. You need to taste blood!
You dodge! Boom! You dodge! Boom! You dodge! Boom! You dodge! Boom! You
dodge! Boom! You dodge! 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!
You hit the Spider Mastermind. The Spider Mastermind flinched! You're going
berserk! 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>...
Next!
-- General ---------------------------------------------------
1448 brave souls have ventured into Phobos:
1253 of those were killed.
8 of those were killed by something unknown.
82 didn't read the thermonuclear bomb manual.
And 75 couldn't handle the stress and committed a stupid suicide.
30 souls destroyed the Mastermind...
1 sacrificed itself for the good of mankind.
27 killed the bitch and survived.
2 showed that it can outsmart Hell itself.
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Edit: Fun fact. My win count in each difficulty level is inversely proportional to that level.
ITYTD: 2 Wins
HNTR: 4 Wins
HMP: 5 Wins
UV: 7 Wins
N!: 12 Wins
I suspect this is because I only care about badges, and it's difficult to get them by winning lower difficulties anymore, but still... didn't know it had gotten to that point until I looked out of idle curiosity.