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Many thanks to pixabay.com
Ghost1, Ninja_Hero, Agent_Hero – Many thanks to 36peas.com
Skeleton1, Vampire1, Zombie1 – Many thanks to Irina Mir (irmirx) of opengameart.org (opengameart.org/users/irmirx)
Demon1, Demon2, Demon_Hero – Troll, Defector & Red Baron in that order, Many thanks to Jose Ortiz (MindChamber) of opengameart.org (opengameart.org/users/mindchamber)