Thought I'd throw a few clips in that might fit the bill, tho they may all be a bit on the 'light side' to be 'death techno', they're a decent blend of metal and electronica:
There's KMFDM as mentioned by Valiance, the Chun Li fight from the only good Streetfighter movie might be a decent example.
http://www.youtube.com/watch?v=ZANQrCqht84 full scene
http://www.youtube.com/watch?v=RRH9k4VXMTU better sound
Pitchshifter's Genius, as seen in Test Drive 5.
http://www.youtube.com/watch?v=sGcdcVblZ-8 and if that's too light...
http://www.youtube.com/watch?v=Z7QTCaQS3zM is their harder, earlier stuff.
Lastly here's how not to do it, this is from the Spawn movie soundtrack, which had some good collaborations between metal and techno bands, but then had to do THIS to 'For whom the bell tolls' by Metallica.
http://www.youtube.com/watch?v=yVYerZqeSZI
Having said that, the Slayer track with Atari Teenage Riot certainly has something, with their version of 'No remorse'
http://www.youtube.com/watch?v=fdkOaG6lk48
I warned you!