Warcraft 3 - Archimonde against All Units
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A Level 10 Archimonde fights against all of the human, orc, undead and night elf units. I put one of each unit and they are fully upgraded. I used even the units that cannot attack Archimonde (such as tanks, hippos etc.) just so they can tank part of the damage. The units that can change their form are represented with all of their respective options.