Presumably by Trogging the hell out of them.
You seem to be on your way to a 2-Hander, your skills look good. Could use a bit more armour, you're probably missing due to your platemail, but I'm horrible at numbers, so I might be talking out of my arse.
You should be able to berserk/trogbro your way out of nearly everything.The biggest problem I see is the absolute lack of elemental resistances - Gargoyles really need those, as they have pretty low health in general, and anything that can bypass their armour can be lethal.
Try searching using the control+f function for Helmet, Boots, Gloves and Cloak - see if there are any with an Ego. You can also try looking for a Plate mail of rF+ or rC+, either will be more useful than your rNeg one - draining is a threat mostly in Elf and the Vaults, 3d20 bolts of fire are a threat everwhere.
Ugly things can be polymorphed with a wand to change their colour if you're worried they'll corode your equip or whatever.
Other than that, leave Swamp, explore the rest of the Lair, The Dungeon and check out the shops on Orc:4. I remember you saying there were nasty enemies on Orc:4, but a Troglodyte should be able to handle most everything Orc:4 has, barring perhaps the mass ogre ending, even then you should be able to lure enemies a few at a time.
edit : Ok I am officially out, and hella mad. Like, so mad. I wasted 2/3rds of my weekend, and this is what I get in the end.
5-rune TrMo of Jiyva. So much horror, so many close calls. And then in the end an orb of fire comes along when I'm already fighting another orb of fire, and they just... kill me.
Dungeon Crawl Stone Soup version 0.14.0-26-g1682e81 (webtiles) character file.
600986 Gravenous the Heavyweight Champion (level 25, -17/271 (273) HPs)
Began as a Troll Monk on Apr 26, 2014.
Was the Champion of Jiyva.
Killed from afar by an orb of fire (47 damage)
... with a fireball
... on Level 5 of the Realm of Zot.
The game lasted 05:00:47 (68880 turns).
Gravenous the Heavyweight Champion (Troll Monk) Turns: 68880, Time: 05:00:48
HP -17/271 (273) AC 26 Str 21 (22) XL: 25 Next: 26%
MP 9/9 EV 17 Int 9 God: Jiyva [******]
Gold 2791 SH 44 Dex 21 (22) Spells: 0 memorised, 24 levels left
rFire + . . SeeInvis . - Unarmed
rCold . . . Clarity . B - +6 swamp dragon armour
rNeg . . . Conserve + a - +0 large shield
rPois + rCorr + S - +1 hat
rElec + rRot . T - +0 cloak {rCorr, Cons}
SustAb . . Spirit . (gloves unavailable)
rMut + Warding . (boots unavailable)
Gourm + Stasis . I - amulet of resist mutation
MR +++.. i - ring of the Mage {Wiz MR++ Int+3}
D - ring of protection from fire
@: extremely resistant to hostile enchantments, unstealthy
A: unfitting armour, claws 3, fangs 1, horns 1, iridescent scales 1, large bone
plates 1, blurry vision 1, fast metabolism 3, gourmand, poison resistance,
regeneration 3, saprovore 2, shaggy fur 1, electricity resistance, spit poison
1, tough skin 2, weak 1, eyeballs 1, gelatinous body 1, pseudopods 1, jelly
sensing items
a: Spit Poison, Request Jelly, Jelly Paralyse, Slimify, Cure Bad Mutation,
Renounce Religion
}: 5/15 runes: decaying, serpentine, slimy, silver, abyssal
You were on level 5 of the Realm of Zot.
You worshipped Jiyva.
Jiyva was exalted by your worship.
You were completely stuffed.
You visited 9 branches of the dungeon, and saw 58 of its levels.
You visited the Abyss 4 times.
You collected 4661 gold pieces.
You spent 1870 gold pieces at shops.
Inventory:
Armour
a - a +0 large shield (worn)
u - a +1 mottled dragon armour
B - a +6 swamp dragon armour (worn)
S - a +1 hat (worn)
T - a +0 cloak of preservation (worn)
Magical devices
y - a wand of draining (5)
C - a wand of teleportation (6)
G - a wand of teleportation (4)
O - a wand of disintegration (8)
Comestibles
b - 8 meat rations
c - 8 chokos
f - 8 apricots
h - 24 bread rations
l - a royal jelly
r - 2 pears
s - 2 slices of pizza
z - 6 apples
H - 3 grapes
L - 15 strawberries
Y - 3 bananas
Scrolls
d - 12 scrolls of remove curse
j - 2 scrolls of enchant weapon II
o - 8 scrolls of recharging
p - a scroll of fear
q - 3 scrolls of teleportation
x - 6 scrolls of fog
N - a scroll of enchant weapon I
Q - 2 scrolls of magic mapping
W - 5 scrolls of identify
Jewellery
i - the ring of the Mage (right claw) {Wiz MR++ Int+3}
(You took it off a frost giant on level 5 of the Vaults)
[ring of wizardry]
It affects your intelligence (+3).
It affects your resistance to hostile enchantments.
v - the ring "Xuak" {rC+ SInv}
(You found it on level 3 of the Abyss)
[ring of protection from cold]
It enhances your eyesight.
D - a ring of protection from fire (left claw)
E - the ring "Shrimixt" {+Fly Int+3}
(You found it on level 5 of the Vaults)
[ring of flight]
It affects your intelligence (+3).
I - an amulet of resist mutation (around neck)
P - the ring of Surprise {Contam rF+ Int+5}
(You found it on level 6 of the Pits of Slime)
[ring of intelligence]
It affects your intelligence (+5).
It protects you from fire.
It causes magical contamination when unequipped.
V - an uncursed ring of see invisible
X - the amulet of Blivuewi {rCorr Str+3}
(You found it on level 7 of the Lair of Beasts)
[amulet of resist corrosion]
It affects your strength (+3).
Potions
e - a potion of curing
k - a potion of porridge
m - a potion of haste
n - a potion of cure mutation
t - 5 potions of brilliance
F - 4 potions of restore abilities
J - a potion of resistance
Magical staves
M - an uncursed staff of wizardry
Z - an uncursed staff of energy
Miscellaneous
g - a fan of gales
w - a phial of floods
A - a phial of floods
K - a stone of tremors
R - a phial of floods
U - a fan of gales
Skills:
* Level 19.7 Fighting
- Level 14.2 Armour
- Level 9.8 Dodging
- Level 1.1 Stealth
- Level 15.0 Shields
O Level 27 Unarmed Combat
You had 24 spell levels left.
You didn't know any spells.
Dungeon Overview and Level Annotations
Branches:
Dungeon (15/15) Temple (0/1) D:6 Orc (4/4) D:11
Elf (0/3) Orc:3 Lair (8/8) D:10 Swamp (5/5) Lair:6
Snake (5/5) Lair:3 Slime (6/6) Lair:7 Vaults (5/5) D:13
Blade (0/1) Vaults:3 Crypt (0/5) Vaults:2 Zot (5/5) Depths:5
Depths (5/5) D:15
Altars:
Ashenzari
Cheibriados
Elyvilon
Makhleb
Nemelex Xobeh
Vehumet
Xom
Yredelemnul
Beogh
Jiyva
Lugonu
Shops:
D:4 *%!(% D:6 [ D:13 } Orc:3 [*(% Orc:4 %!([? Vaults:1 !
Vaults:2 %( Vaults:3 * Vaults:4 (
Portals:
Hell: Depths:1 Depths:3 Depths:4 Depths:5
Abyss: Depths:3 Depths:4
Pandemonium: Depths:3
Ziggurat: Depths:2
Trove: Depths:2 (give +4,+4 demon blade)
Annotations:
D:11 grisnicke's ghost, powerful FoEE
Swamp:4 exclusion: downstairs
Swamp:5 Lernaean hydra
Snake:5 Jorgrun
Slime:6 Dissolution; Royal Jelly
Vaults:3 Nikola
Innate Abilities, Weirdness & Mutations
You are too large for most types of armour.
You have claws for hands.
Your metabolism is lightning-fast.
You like to eat raw meat.
You regenerate.
You can eat rotten meat.
You are covered in fur (AC +1).
You have very tough skin (AC +2).
You have very sharp teeth.
You have a pair of small horns on your head.
You are partially covered in iridescent scales (AC +4).
You are partially covered in large bone plates (AC +2, SH +2).
Your vision is a little blurry.
Your system is resistant to poisons.
You are resistant to electric shocks.
You can spit poison.
You are weak. (Str -2)
Your body is partially covered in golden eyeballs (Acc +3).
Your rubbery body absorbs attacks (AC +1).
Armour fits poorly on your pseudopods.
You have a small jelly attached to you that senses nearby items.
I cannot express how disappointed I am from my play this tournament.