Your best stealth kill in non-stealth game.

[Leon's Hell]

I was just playing F.E.A.R. 2 and notice a guard was unaware during a hectic fire fight and thought I'd have some fun with him. So I changed my grenades to the fire type and held it down until it exploded in my hand, leaving both of us to run around screaming in our own fiery death dance.

What is your favourite kill that your enemies didn't expect?

 

[sylekage]

I turned a corner and there was a guy standing there, looking away, so I pulled my pistol out and shot him in the head. the first call of duty. good times good times

 

[Vrex360]

I can remember a lot of times in Halo 2 playing as the Arbiter just rushing in, killing a few then disappearing into the shadows. It was fun, and I think the best was when I managed to in sequence kill about three brutes using that tactic.

Also I sneak killed a lot of Splicers in Bioshock with my wrench.

 

[NotAPie]

Sneaking up on a sniper in Halo 3 is always fun.

 

[NuclearPenguin]

The grandma in like the first or second stage of SWAT. I know its sorta stealth based but this kill was just pure awesome.
Me and my mate were playing co-op and I was sorta on edge while playing it, dunno why.
Anyway, I heard her say something, I didnt get to hear more than the first word before I turned around and shot her in the head with my pistol, killing her and failing the mission.
Hey! She didnt see me do it atleast!

 

[PureZephyr]

i earned the 'kill the entire team within 10 seconds' achievement in CoD:MW2 by knifing the entire team that was held up in one building camping away all facing the other direction, not noticing even through the last guy that i was there. i laughed so hard i couldn't breathe and was actually scared that i would die laughing.

 

[Lullabye]

ran into a little walker mech in armored core 4 going at least 2000 mph and killed it. I don't think it saw me coming.

 

[Emo-Hawk]

Hunting down an enermy on MW2 used the throwing knife and then stabed two other members of his team was kinda fun until I got raped afterwards O_O
Another time it isnt really stealth but me and this guy noticed each other at the same time i had my shotgun out n he was too far away so I threw my knife and as he killed me, my knife just flew into him leaving him to die. ^^

Also Batman had a few moments of pure lolism just by scaring the hell out of the henchmen.

 

[[Insert Name Here]]

On GTA 4 online, in cover against a building, somebody ran up not knowing I was there, so I shotgunned him in the face.

 

[TheMarauding]

"Warthog from above" has become a favourite killing method for me on Halo. Any time the poor bastard I'm about to squish doesn't turn around, I consider that a stealth kill. If we're not counting that, I'll have any rocket kill I've ever scored when my opponent wasn't looking.

 

[WINDOWCLEAN2]

Sorry to say but there is a minor flaw in this thread, the rule of No proof = didn't happen kinda applies me thinks?

OT: Blasting down enemies in Starfox, Thank god for my 'useful' team-mates telling me to "Do A Barrel Roll!"

 

[maddawg IAJI]

Not really a sneak attack, but he never knew I was there so....

In Bioshock, shortly after getting the Plasmid for making your enemies open to trigger alarms (You honestly got to question the motive Ryan Industries would ever have to release such a product.) I saw a Big Daddy walk by a camerea. So I just stood up on a balcony and spent about 12 minutes just watching it kill hundreds of sentery guns until eventually being taken down itself.

 

[SnipErlite]

Having one of my cannons one-shot the enemy General through a fort wall and outside it's range on ETW

Not very stealthy but he sure didn't see it coming

 

[ffxfriek]

killing people with mongooses in halo 3. check out valhalla and youll see how its fun and stealth

 

[Gamegeneral]

Pick a sandbox game with player ragdolling.
I've killed enemies by landing on them.

Oh!
And I know a million people have done this, but it still counts as my favorite kill in TF2:
Using the charging targe to ramp off of something and cleave some poor bastard's head off just in time for him to turn around.

 

[azncutthroat]

I planted a Claymore in front of a sniper, while prone, in CoD4.

 

[Jasper Jeffs]

Flat out running people the fuck down on GTA IV who are just stood in the middle of an empty road in Algonquin. I've killed a few people like this, I don't know why I've seen so many people do it. You'd think standing in the middle of a huge road would be the last place to stand if you're just walking around, or afk. Maybe they like getting ran over.