Defeating a Lich in Bloons Tower Defense 6 can be challenging, but it is possible with the right strategy. Here are some tips to help you defeat a Lich in BTD6:
Use the right towers: The Lich is immune to physical damage, so towers that deal magical or energy damage are the most effective against it. Some good tower options include wizards, ninja monkeys, and some hero units like Obyn Greenfoot and Quincy.
Upgrade your towers: To maximize the damage output of your magical and energy-based towers, make sure to upgrade them as much as possible. Upgrade paths like "Arcane Spike" for the wizard and "Grand Saboteur" for the ninja monkey are good options.
Use abilities: Many towers and heroes have abilities that can deal a lot of damage to the Lich. Use them strategically to get the most out of them.
Use support towers: Support towers like Alchemist and Druid can help boost the damage output of your other towers, making it easier to defeat the Lich.
Save up for the right moment: The Lich has a lot of health, so it may take some time to defeat it. Be patient and save up for more powerful towers or upgrades that can deal even more damage.
Use the right map: Some maps have better chokepoints or areas where you can set up your towers for maximum efficiency. Experiment with different maps to find the one that works best for you.
Overall, defeating a Lich in BTD6 requires a combination of the right towers, upgrades, abilities, and strategy. With the right approach, you can overcome this formidable foe and emerge victorious.