The Problem

Portal storms keep spawning enemies inside my base and I have no idea how to stop them.

The Solution

Your first priority is upgrading the Crafting Bench (see Crafting Bench upgrades) with the Portal Suppression Field — this is the primary defense against portal incursions and reduces enemy spawns near your base core. Enemies beeline for your Crafting Bench during Portal Storms and Assault Events, so defending it is the core objective. Shock Trap (see base defense guide)s are your best early defense: no external power (see power system) needed, 30-second recharge, 6 activations kill a Security Bot, and easy to spam around doorways. Tesla Coils deal 100 Electricity damage per hit but attack indiscriminately (including you) — equip a Glow Shard or connect a Lever for on/off control. Keep lights on — well-lit areas reduce spawns. Defense power must be on a separate battery branch from food storage and living utilities.

Step-by-Step

1. Upgrade your Crafting Bench with the Portal Suppression Field — this is the single most important defense investment.
2. Place Shock Traps around perimeter doorways; they need no power, recharge in 30 seconds, and 6 activations kill a Security Bot.
3. Set up Tesla Coils on their own buffered battery branch with a Lever for on/off control.
4. Keep base lights on at night; well-lit areas reduce enemy spawn rates.
5. Repair all traps immediately after each raid while failure points are still visible.

Common Mistakes

• Building traps before upgrading the Portal Suppression Field, then watching enemies spawn inside the base anyway.
• Running Tesla Coils on the same power branch as the Refrigerator and losing all stored food during a raid.
• Placing traps in open areas where enemies can path around them instead of inside committed turns.