Here's a few I discovered when I was ruler of Novaya Zemlya, USSR:
Stoning,
mercury poisoning,
radiation poisoning,
throw them into chyrnoble,
crushing celings,
death by cyberdemon,
shot by Spider Mastermind,
burned by Archvile,
hit by Baron of Hell plasma,
punched by hell knight,
plasmaed by arachnotrons,
fireballed by Mancubus,
hit by lost soul shot out of a pain elemental,
burned by a lost soul,
hit by a revenant rocket,
thunderballed by cacodemons,
bitten by cacodemon,
eaten by a spectre,
nibbled on by a demon,
imp-balled to death,
chainguned by a former commando,
shotguned by a former sergeant,
rifled by a Former human,
BFGed,
Splash damaged by a BFG,
toxic pit ified, lavafied,
giblified by a rocket/BFG/plasma rifle / barrel/beserk fist,
telefragged,
venalation fans,
grenaded,
Hyperblasterfied,
chainsawed,
sniped,
poisned by mushrooms,
exposure to elements,
exposure to cross-fired,
killed by a lead pipe in the library by colonal mustard
lasered
microwave beamed
microwave oven
tokamaked
railguned
fried by thors hammer
supernovaed
starflared
stickfoamed
taken care of by the mafia
ESG mined
RPGed (gun)
RPGed (D&D)
mined by a robominer
robosurvayed
robobulldozed
spent more than 75 days in a evactruck
smelted
GORFed
Advance lab explosion
standard lad explosion
basic lab collapsing
shafted
Blighted
Acid Clouded
scout hit and run
emp missle lands on target
put under a RLV during liftoff
built on top of
Geothermal plant 'accident'
magma vent 'overheating'
microwaved by solar plant
hit by vulcans hammer part deux
wasted GTA style
put in the vaccum of space
not using approved soap
corn flakes
emotiaconed
quoted
"I don't belive in faries"
iddqd
beliveing in free speech
spiked
digested by a voreophile
Spontaneus combustion
death by love (preferrably care bears)
fragged
vortexed
volcanified
"I hate Trix"
"I hate the TRIX Rabbit"
smiteing
rods from god (tungsten rods fall and vaporize with kenitic energy)
and my favorite:
death by boredom
THIS IS MY LIST, HAHAHAHA