gremlin boss help

[watersky82]

I only use one stack of black knight and 1 stack of ancient vampire.

Black knight with level 3 stone skin on.
It will hack at the boss.

Ancient vampire will destroy all the aggressive tower.
Leave 1 friendly tower behind so that it will summon
troops and your ancient vampire can restore its itself
by attacking the summoned troop.

Once the boss is killed, just use elvin to resurrect black knight.