how to enable/play Legendary Knight Mode in DMC3? And other enemy spawn requests

[nrohit92]

Hi. My love for the game grew tenfold after I installed the ddmk mod. Now I just play specific rooms in the game using the arcade mode. However, I would like to know:

1. How to enable Legendary Knight mode in the gameplay? I essentially want more number of the default enemies to spawn in the mission. For eg. in M2, i want more number of hell prides, hell lusts, sloths, etc. (Probably even 2 HVs)
2. Is it possible to enable DTed enemies from the beginning of the battle (similar to how BP has DTed enemies after lvl 9000) ?
3. Also, is there any way to disable enemies like Dulhalan, soul eaters, Enigmas, etc and replace them with other enemies?
4. Also can someone suggest good room locations to spawn enemies for practice?

I am most curious about the legendary knight mode feature.