Walkthrough: Dungeon Defender, level 9 (Wizard/Hard)

Skill allocation: Three points into the manticore tree, and everything else into the avatar tree (abilities and treasure skills only).

Finally. The best of the best the humans have got. And it is not even THAT difficult. Assuming that you manage to get a solid defense up in time.

To do so, dig out the areas where the demons and elementals are placed first (see the screenshot below). Move your avatar as shown to a place near the left spawning point and keep him around, unless the enemies threaten to overrun the other path.

Try to place a demon to right soon, because your melee units will be outnumbered vastly in the beginning. Also get at least some manticore lairs up fast to be able to stop the enemy valkyries.

On the left, you can hold out with two minotaurs and one manticore lair for quite a while, so focus on building up defenses on the right.

Place lairs as shown and throw in some traps in between. If you have some money to spare, buy some depots, but usually you need most of the money for the lairs and traps.

If everything goes well, you should not have much trouble. Watch out for the boss enemy, though. If it breaks through, the game is lost.

Congratulations, you've made it! Let's all hope there will be a Dungeon Defender 2 soon!

Walkthrough: Dungeon Defender, level 8 (Wizard/Hard)

Skill allocation: Three points into the centaur tree, all other available points go to the avatar tree.

With this skill settings and some nice lair placement, this level is a lot of fun!

Keep your avatar near the left spawning point most of the time, and move it away only in case you need to help out elsewhere and the enemies are threatening to overrun one of the other paths.

Immediately issue dig orders for the more important spots. Start with some of the minotaurs and centaurs, as they are the cheapest. For the left spawning point, you will need only one minotaur and your avatar for a while.

Make sure to place those lairs first which will have the most contact with the humans. For example, the Centaurs on the bottom lefternmost corner (where the enemies turn around the corner) will be active almost constantly. Another example is the demon lair immediately to the right of the bottom spawning point.

Try to conserve money: Build only as much as necessary to survive. If you have about 500 to 1000 gold coins of trease, buy one or more depots, as they will greatly increase your income.

Enjoy and stay tuned for the final level!

Walkthrough: Dungeon Defender, level 7 (Wizard/Hard)

Skill allocation: Three points into the manticore tree, everything else goes to the avatar.

Pause the game, and issue dig orders covering most of the treasure squares. Also, dig out the altars and temples as fast as possible.

Keep your avatar near the left spawning point, as seen on the screenshot. Start out with only a minotaur lair and your avatar on the left, and with an elemental and some minotaurs on the right.

Build the lairs as depicted below and focus on the demons (because the really hit hard) and the lairs around the bonus-providing squares (altars, temples).

Good luck!