no mouse cause i don't wanna play a first person shooter but devil may cry. and i scored S on almost all missions in DMD,no cheats,no auto,no super character or anything,with keyboard and default key configuration. i am able to do jump canceling,style switching,distorted real impact,royal guard and use all the abilities of the game except for some pandora transformation codes and nero's calibur/shuffle even though it is possible,i'm just not skilled anough yet and i don't bother as i'm not really into guns but have done that after a few tries so it can be done. to mention,finished the legendary dark knight mode too,even hell and hell lol and there was really no need to move the camera around as you have the lock on option using the space key,you don't even have to use O to change targets as all you have to do is turn around and tap space. only at one particular place inside the fortuna castle,at the bars sealing the last gyro blade,the camera sometimes switches off room and i lose focus,and thats rarely. press P and that is all fine. so as for controls and camera,i never had any problems.