Ultimate Terminus Easter Egg Guide
Complete walkthrough: Math puzzle solver, Beamsmasher build, and Patient 13 boss fight
💡 Preparation Tips
2-3 players recommended for zombie aggro management
Quick Revive, Juggernog, Stamin-Up, PhD Flopper
Pack-a-Punch ASG-89 shotgun for boss DPS
Activating the Lab
1 Power Generators & Laptops
Activate the generator for Perk Machines, then find and power 3 Laptops:
2 Fuse Boxes & EMF Fob
Equip Dead Wire mod and shoot 5 fuse boxes:
- Opposite Pack-a-Punch (behind glass window)
- Elevator shaft (left of Pack-a-Punch)
- Above Pack-a-Punch
- Juggernog building (above generator)
- Near Juggernog double doors (electric box wall)
Grab the EMF Fob and enter the lab.
Resonator & Algebra Puzzle
3 Multiphasic Resonator
- Go to Sea Tower
- Grab Resonator from the lit desk
- Place it on lab computer (marked with yellow sticky notes)
4 Solve the Algebra Puzzle
Find X, Y, Z symbols on sticky notes. Each symbol = a value (0, 10, 11, 20, 21, 22):
Need the code for your X, Y, Z symbols? Use our free tool — no 5,000 Essence cost.
Open Terminus CalculatorElectric Orbs & Beamsmasher
5 Electric Orbs Mini-Game
- Wait until Round 9+
- Travel to Castle Rock Island via speedboat
- Kill zombies by hitting them with the electric orb
- Collect 2 motes of energy and deposit them
- Repeat twice on each island — final orb drops Ampmunition
6 Build the Beamsmasher
Go to lab workbench and craft the Beamsmasher (DRI-11) Wonder Weapon.
Freeing Nathan & Code Hunt
7 Keycard & Hard Drives
Use Beamsmasher to destroy 4 tentacle traps:
- Bio Lab — Speed Cola/PHD Flopper entrances
- Living Quarters — Opposite Juggernog
- Holding Cells
Collect keycards under scrap metal. Shoot traps to drop hard drives. Deliver to Peck.
8 Cell Combination Puzzle
Enter code in Nathan's cell.
Boss Fight: Patient 13
Defeat Nathan (Mini-Boss)
- Turn cell valves to start the battle
- Use Pack-a-Punch ASG-89 to target Nathan's weak points
- Collect Keycard and activate Communications Room computer
Node Connectors & Bomb Defusal
- Grab Node Connectors from wrecked vessel
- Fix cables at Crab Island and Speed-Cola Cave
- Hack buoys: East Islands, Temple Island, Shipwreck
- During 5-minute timer: Use Smoke Grenades to defuse bombs (priority: lab stairs, control room)
🔥 Patient 13 Boss Strategy
Recommended Loadout: Chopper Gunner, Monkey Bombs, full armor/perks
- Phase 1: Focus on glowing shoulder weakness. Use arena cover.
- Phase 2: Destroy pustules on tentacles
- Phase 3: HIDE during blue glow (wipe attack). Unleash Chopper Gunner for max DPS.
🏆 Easter Egg Rewards
Dark Ops Challenge
Patient 13 Intel
25,000+ XP
Unique Calling Card