Learn the maps
Knowing the maps you're playing is essential for any number of reasons -- you know the lines of attack and retreat, you know where the important weapons and items are, where the artifacts are on the map that will cause key noises, if an enemy runs into one passage where he's likely to come out, and so on. If you know the arena you're playing in very well, you'll have a powerful advantage over everybody that doesn't.
Knowing the maps you're playing is essential for any number of reasons -- you know the lines of attack and retreat, you know where the important weapons and items are, where the artifacts are on the map that will cause key noises, if an enemy runs into one passage where he's likely to come out, and so on. If you know the arena you're playing in very well, you'll have a powerful advantage over everybody that doesn't.