b. Bloater: This zombie type is slower than the standard zombie, but they have a lot more health. They also explode when they're defeated, dealing damage to any nearby defenders.

c. Runner Zombie: This zombie type is faster than the standard zombie and can quickly close the gap between defenders and the base. They also deal more damage per hit.

d. Tank: This is the most challenging zombie type in the game. They have a lot of health, deal massive damage when they attack, and can knock down defenses.

2. Focus on Upgrading Your Base and Defenses First
At the beginning of the game, players are given a limited number of resources to build and upgrade their defenses. One common mistake that players make is spending too much on weapons and not enough on fortifying their base. Upgrading your base and defenses first is crucial in the early stages of the game, as it provides an added layer of protection against the zombie horde. Focus on upgrading your walls, turrets, and traps, before investing in more powerful weapons.

3. Use Barriers to Slow Down Zombies
It's essential to slow down zombies' progress as they approach your base to give defenders time to deal with them. Using barriers is an effective way to do this. Barriers block the path of zombies, forcing them to take the long way around, giving defenders more time to attack them. Barricades can be upgraded to become more durable, so make sure to invest in them early on.

4. Invest in Turrets
Turrets are the backbone of your defense, and they should be placed in strategic locations to defend your base effectively. Investing in turrets with a high rate of fire and damage is crucial. Make sure to place turrets in high-traffic areas where zombies are likely to spawn or grouped together.

5. Use Traps Wisely
Traps are an excellent way to deal with zombies before they reach your defenses. Use them strategically to slow down or damage hordes of zombies. Traps are effective in combination with turrets and should be used in areas where zombies are likely to spawn.

6. Understand Weapon Efficiency
Each weapon in the game has unique stats, including damage, reload time, and accuracy. Understanding the strengths and weaknesses of each weapon is crucial in choosing the right weapon for the job. For example, rifles are effective at longer ranges, while shotguns are better at close combat.

7. Use Grenades and Molotovs
Grenades and molotov cocktails are incredibly powerful weapons that are effective against large hordes of zombies. Grenades deal massive damage in a small area, while molotovs deal damage over time, making them perfect for setting groups of zombies on fire. Make sure to use these weapons only when necessary, as they have limited uses.

8. Choose the Right Defenders
Defenders are characters that help defend your base from the zombie horde. Each defender has unique stats, including health, damage, and special abilities. Choose defenders that deal the most damage and have the most health to defend against zombies effectively. Defenders can also be upgraded, so make sure to invest in them regularly.

9. Balance Offense and Defense
Balancing offense and defense is essential in They Are Coming Zombie Defense. Make sure to invest in turrets, traps, and barriers while also upgrading your weapons and defenders. A balanced approach to defense is the key to surviving the later stages of the game.

10. Don't Get Overwhelmed
The later stages of the game can be overwhelming, with hordes of zombies attacking from every angle. The key to survival is to remain calm and focused. Prioritize defending your base and coordinate defenders to attack zombies in waves. Remember, retreating is always an option if things get out of hand.

Conclusion:
They Are Coming Zombie Defense is a challenging tower defense game that requires careful planning and strategic positioning to survive the zombie onslaught. By understanding the different zombie types, investing in defenses, and balancing offense and defense, players can survive the later stages of the game and progress through the levels. Remember to remain calm and focused throughout the game, and don't be afraid to adjust your tactics as necessary. Good luck defending your base against the zombie horde!