Waves 4 and 5 revealed by Tom Vassel of Dice Tower

Wave 4 consists of Gargoyle, Gold Dragon, and a Stone Giant. Wave 5 consists of the Drow Elf Ranger, Red Dracolich, and Young Bronze Dragon.

Wait a minute! Drow Elf Ranger. You know what that means!

Wave 4:

Wave 5:

Tom also did reviews for Waves 2 and 3:

Wave 2:

Wave 3: