Zombies in Terraria are one of the first hostile mobs you’ll encounter, especially during nighttime and Blood Moons. They are fundamental for early-game combat experience and material gathering. Here are some strategies to effectively handle zombies and maximize your early game survival:

1. Preparation and Defense

• Shelter: Ensure you have a basic house built before nightfall. Zombies cannot open doors on normal nights, so a simple dwelling with doors will keep them at bay. During Blood Moons, however, they can open doors, so it’s advisable to block doors with blocks or furniture on these nights.
• Platforms: In your base, use platforms for the entry points instead of doors. Zombies cannot navigate through platforms that are placed a few blocks above the ground level.
• Trenches: Digging a trench two blocks wide and two blocks deep directly in front of the entrance doors can prevent zombies from reaching the door altogether.

2. Combat Tactics

• Height Advantage: Zombies can’t jump very high, so fighting from a platform raised above the ground can allow you to hit them without them being able to hit you.
• Knockback Weapons: Early on, swords with good knockback, such as broadswords, can keep zombies at a safe distance. Keep swinging as they approach to keep them back.
• Bows and Ranged Weapons: If you prefer to keep your distance, crafting a simple bow and some arrows is effective. This method allows you to deal with zombies without them ever reaching you.
• Traps: Utilize traps if available. Wooden spikes, boulders, or even simple pitfalls can help in dealing with larger groups or during Blood Moons.

3. Blood Moon Preparedness

• Reinforce Defenses: As zombies can open doors during Blood Moons, reinforce entry points or create an elevated access point that can only be reached by jumping or using platforms.
• Area Control: Create a killing zone where you can control the flow of zombies. This can be done with a long hallway with doors on either side to control entry or a pit around your house where they fall and can be easily targeted.
• Panic Room: Have a safe fallback point in your house, a small room with reinforced walls and an accessible chest containing emergency potions and weapons.

4. Use the Environment

• Natural Barriers: Use hills, water, or cliffs to your advantage. Zombies move slowly uphill and very slowly in the water.
• Nighttime Management: If you need to travel at night, carrying Shine Potions or torches can help deter some spawns and let you see the threats before they reach you.

5. Item and Equipment Upgrades

• Armor Upgrades: Even simple armor sets like wooden or cactus armor can significantly reduce the damage from zombie attacks.
• Accessory Utilization: Early game accessories that increase mobility (like Hermes Boots) or provide light (like the Mining Helmet) can greatly enhance your ability to manage zombies effectively.

6. Improving Skills

• Practice Timing: Learning the timing of your attacks, especially with melee weapons, to maximize knockback and minimize hits taken is crucial.
• Mobility Practice: Work on your jumping and dodging skills, as moving effectively can be more important than raw firepower in early game encounters.

By combining these strategies, you can effectively manage zombie threats in Terraria, keeping them from overwhelming you as you work on building up your base and equipment. As your gear and skills improve, zombies will pose less of a threat, allowing you to focus on more significant challenges.