If the game shows 'Lockdown' before the end of a mission, I don't think it should count as a stealth run. What are your opinions on this, and should there be a change?

I agree, it does seem odd to label a run as stealth if you alert the guards. Could be interesting to see 100% stealth runs though.

I think it should just be marked as 'Mixed' if you get to lockdown.

Yeah, or just have new catagories of runs specifically for different methods?

They could just make a new catagory for Stealth be loud ending.

Mixed exists for specific things. If you do the entire mission stealthily but go loud as you escape, you still did everything stealthily. To get mixed, you'd have to do some of the objectives in stealth and the rest in loud but this can only really be done on King Street.

Also it doesn't affect your placement so...

As for making a category, Loud would be one, but that'd have to wait for a Category Extension where it would be focused on, since Stealth will mostly If not always be the fastest method.