Some tips about DScent.....turn the music off and the game will run better and won't be as likely to crash or corrupt your microSD. Yes, this game CAN corrupt your microSD.....turning the music off can help eliminate that problem. The game constantly battles the 4meg memory cap in the DS and that's where the problems start. Saving the game seems to be where most corruptions come from, save conservatively.
I run all parts of DScent straight out of the "dscent" folder created on the root of the card, that includes the dscent.nds file. I didn't have to DLDI patch anything because the CycloDS (and just about every other flashcart on the market) auto-patches DLDI anyway, but you can patch the file manually if you want to, shouldn't make a difference.
Supposedly, having a slot2 cart while playing this game should make no difference, it's not programmed to use the extra memory. But it is recommended that you remove the slot2 cart while playing this game to avoid possible crashes and/or corruptions being caused by the slot2 cart.
You'll also want to edit the controls.....keep your control set to the bare minimum necessary to play the game. There are more actual controls than there are buttons on the DS. Setting the controls to work for you can be tricky, Choose carefully, trial-and-error. Eventually you'll come up with a setup that works for you and you can enjoy the game.
Make sure to use the latest version of DScent, alpha 4.2. I personally haven't had 4.2 corrupt my card yet, but it has crashed a couple times, usually during heavy action.
Backup your microSD to your computer before playing this game at any length, just to be safe, because of that possible corruption issue.
kayvenm suddenly just stopped communicating after releasing alpha 4.2 August 7th, 2007 and hasn't been heard from since, apparently. So the game does still have bugs. Just remember that. He was so close too. The game runs near perfect. If it wasn't for those random crashes and especially the corruptions, I'd play this more.
Anyway, just thought you should be aware when playing this game.