Grenade + Aqua = fun

[color="#cc8899"]Just found this out yesterday -
If you use grenade under water, it will float 2 feet from you and then promptly start falling very, very slowly. In fact, if you float all the way to the top of a map, then fall down while spamming it, you can get about 6-7+ to drop and explode at once. With max grenade and a mob underneath you, I imagine you could accomplish hack-like killing speeds

Strategy # 2 - Gunslinger air raids
You can also drop em as you float accross the top to aggro a ton of enemies [/COLOR]

In the amount of time it takes to drop each Grenade, you could have fired a Flamethrower and Ice Splitter combo.