tower defense strategy, Bloons TD 6, Lych, powerful boss, in-game enemy, strategic placement, monkey towers, upgrade paths, synergy, hero choice, Quincy, Gwendolin, Obyn Greenfoot, Pat Fusty, Benjamin, Ezili, Churchill, Adora, Etienne, Sai, Dartz, Psi, brick wall texture, moody lighting, dusk setting, dramatic shadows, intense battle scene, action-packed, vibrant colors, energy beams, explosive effects, magic spells, enchanted forest background, high contrast, dynamic angle, close-up on action, suspenseful atmosphere.