There was this other thread here where @Gripphon suggested /p7 might not be the way to go: I guess it really depends on build as well. Haven't tested really, but I think for Java /p7 should be a no brainer because kill speed is a non-issue after a certain point, and efficiency is more about practice and good herding. For other builds though it will be interesting to see some comparisons. When it comes to just clearing the level quickly, I'm not sure Hammerdin is so bad. The first instinct is it can't be efficient because of the required damage build up, but when herding a lot it should be able to be reasonably quick. The problem is, that's when the cluttering issue kicks in big time. Same goes for many other builds that don't kill instantly. I think what makes Java, CE Necro, Lightning Sorc so good is the fact that their damage is (1) very high, (2) effective instantly without delay, so no waiting to see drops, and (3) these skills enable you to constantly kill a good amount of stuff while still seeing all the drops. As opposed to Travincal and other areas, I think it's important to realize that run times actually don't say all that much about efficiency at all. Because of course you can herd the whole cow level and kill everything at once in under 3 minutes, but it's kinda obvious that's not efficient farming (well, apart from the XP). Add to this that run times are very hard to compare, for example a CE Necro will always avoid getting anywhere near the Cow King and thus skip a portion of the map. Java on the other hand will leave quite a few cows alive when density gets too low for LF. Stuff like this is not accounted for in run times. Now you could check XP/minute or something, but ultimately that's not a much better indicator because it doesn't take into account the (very important) ability to see drops. TLDR: No need to create any pressure with goals regarding run times. On the contrary, overall this could make running less efficient in the end.