Hey, random coincidence: i was going through my inbox of stuff to play for the unreal games (accumulating since 2005 and currently at 25 GB uninstalled stuff). And i found a mod called "Redeemer radiation" I was like lmao. thought i'd tell you guys.
Also, found an epic weapon mod sitting in there called "Enhanced weapons". The redeemer fits the description from a few posts back; that mushroom cloud is sexy. In addition the other super weapons are beefed up to cater more for onslaught large scale destruction. On top of that pretty much every other weapon feels more powerful due to enhanced graphics and pretty effects. I don't know if the damage dealt has actually changed; it may very well have decreased, but the weapons "feel" more powerful due to the revamped graphics.
For reasons of dialup disadvantage, i can't provide links or perform a search for myself (seriously google, why do you no longer cater to us "56k"ers
), but you guys might be interested in searching for "redeemer radiation" and "enhanced weapons"