Basic Warlock Strategies

Remember to buy all the spells available to you, and don't specialism to a particular school of magic. The Warlock is most powerful when he has a wide variety of spells. Once you reach level 10, it is essential that you keep a cache of soul shards. It is much easier to get soul shards when you have a good pet, and if you end up with no shards and just an imp at higher levels, you might be in trouble.

In combat, avoid melee at all costs, even more so than the mage. The warlock has no instant cast damage spell, and is thus extremely vulnerable in melee. Use your minion to distract your enemy and avoid casting spells that make monsters hate you unless absolutely necessary.

When soloing, start off by casting all your available Damage Over Time spells, ending with Immolation. Once the enemy reaches you, cast fear to send him running, and barrage him with Shadowbolt while he flees. Use your minion to engage the enemy, and repeat the above cycle if necessary.