Baldur's Gate II: Shadows of Amn Tips

Mass Group Kills and Fireball
Early on, during character creation, I learned the magic of fireball. Fireball is one of the attacks that mages have within the game that has splash damage, allowing it to do damage to several enemies at once.

Such enemies as Gibberlings and Goblins attack in groups of perhaps six to ten, making destroying them, while easy, and annoying task, especially with your wrath not taking them all out at once.

An easy way around this is to pick up the fireball spell early on in the game. This spell, if targeted for the centre of the group, can kill all members of it with one shot, even at level four. Remember, though - splash damage is not exclusive to the enemy.