Beheader's seat heroic challenge impossible tutorial/walkthrough

A surprisingly difficult level, but I managed to do it 8x in a row with this strategy. Make sure you use Eridan properly (have him out of melee combat for his mini arrow storm, then have him engage for the slash).

Before calling wave 2, make sure to place a fresh set of reinforcements, then instacall the next wave and place another one.

On wave 2 wait until the second group of 4x gnolls appears, THEN arrow storm. The aura from ogre magi means this does a shitload of damage to all of them. At the end of the wave use lightning up top, then call the next wave instantly, and use arrow storm to mop up anything that leaks.

On wave 3 you may need to move Eridan to the right side if Ogre Magi get too far.

On wave 4 use lightning early on the right side, when the gnolls start to bunch up. Take note of how I place my reinforcements, it is not random at all. You need them on the right at some point, and on the left at other points. If at any point it looks like you're gonna leak gnolls, just upgrade barracks for instant respawn.

Wave 5: Lightning + arrow storm on the right ogre side when hunter's mark hits the ogre. Have Eridan engage second ogre magi. After some time move him to the left, to hold the line. Again, if at any point it looks like you're gonna leak, feel free to upgrade barracks.

Wave 6: Stall the Blood Ogre side with Eridan and reinforcements. WAIT with the lightning until the Ogre Magi approaches and they all group up. You can use arrow storm whenever you want, but I recommend it be when the second Ogre Magi arrives. When the gnolls on the right approach the crystal, hold reinforcements just in case you need to place some quickly not to leak.

Alternative strategy:    • Beheader's seat heroic challenge impossibl...