GameRager: Sounds nice...by maps do you mean SP by any chance? Just curious. Also those textures sound lovely.
To be honest, I just downloaded most of this stuff yesterday and haven't tried it all. I think it's mostly multiplayer. One of the maps is the slipgate hub from the original Quake. :D
Two of the textures I found are for Kingpin and Soldier of Fortune. The textures from Daikatana itself can be, and
must be, extracted with one of the included tools to be used with the editor. This is very nicely documented in the IonRadiant editor's documentation.
Honestly, it's hard to understand the hate for Daikatana these days. Some of the weapons are silly, some are legitimately cool (there are proper rocket launchers you can jump with, and the shotgun in episode one, quirky as it is, provides very fun gliding and high-jumping mechanics. I love how similar Daikatana feels to Quake, being made in a modified engine during that era and all. It's like Quake's somewhat special adopted Japanese little brother. :P
Deathmatch can be a lot of fun, and every era has at least one form of mobility weapon (though episode four only has the ice gun, but you can use it much like episode one's shotgun).
The campaign does have many questionable things (starting you off in a swamp level and immediately introducing annoying tiny enemies as your first foes, a gun that will hurt you in the shallow water present on the level, save gems, level design of varying quality, the fact that the main villain is secretly Dr. Robotnik since you're frequently pitted against robotic animals), but it can be a fun game, a fun deathmatch game with proximity bombs, rocket launchers, ricochet guns, and more, and of course, if you still hate the game with every fiber of your being, you can always try your hand at making a better Daikatana with the map editor. ;)
Also, inappropriate sounds effects were my greatest annoyance. Some of them just seem out of place, and the worst use of sound effects is in the rather long loading screens. I can't believe they didn't figure out how annoying the loading screen sounds were, it shouldn't take even an hour of playtesting to determine that. -_-;
I forgot to mention. For some reason, the console is disabled by default. Add "+set console 1" to the command line options to enable the console. Add "+set cheats 1" to enable cheats, including noclip and god mode. In addition, editing your configuration file and your key bindings is pretty much identical to Quake, it shouldn't be too hard. Just make sure you save any changes to your settings before you quit the game. It doesn't do this automatically. Again, odd design decisions, but there's still a pretty decent game in there. I've played much, much worse.
Also, the patcher seems to delete katana.ico. Be sure to back it up before patching it you want the icon.