SFX and tooltip fix

HexDefense

HexDefense is a roguelike tower defense with an emphasis on constant action with little to no downtime. Defend your city by building towers, upgrading them with money from their fallen foes, and equipping them with strange items you find out in the world!

[list] [*]Sound effects have been added to towers and some projectiles. [*]Added tooltips that were missing from two towers [/list]