How to Get Colossal Serum in Attack on Titan Revolution: Farming Guide

Understanding the Colossal Titan Serum

In Attack on Titan Revolution, the Colossal Titan is widely considered the powerhouse of PvE content. Known for its massive AoE (Area of Effect) damage, "Atomic Ascension" nuke, and the ability to clear waves of Titans simply by walking over them, it is the ultimate goal for many endgame players. However, obtaining the Colossal Serum required to unlock this Shifter is a significant grind that demands preparation, strategy, and a bit of luck.

The Colossal Serum is not a guaranteed item; it is a rare drop found primarily within the Colossal Titan Raid. Because of the high difficulty and the specific mechanics involved, you cannot simply jump into this raid without meeting strict requirements. This guide will walk you through the necessary steps to farm the serum efficiently, the best team compositions, and how to optimize your build once you finally unlock the Titan.

Requirements for the Colossal Titan Raid

Before you attempt to farm the Colossal Serum, you must ensure your account meets the entry criteria. The game enforces these restrictions to maintain the challenge level of the raid.

• Prestige Level: You must be at least Prestige 2.
• Gear Rank: Your gear must be at an A-rank or better.
• Family Compatibility: Crucial: The Colossal Serum will not function if you are using the Zoe, Ackerman, or Helos families. Ensure you are using a compatible family before committing to the grind.
• Access: You must have unlocked the ability to queue for the lobby raid.

If you are currently below these thresholds, focus on leveling your Prestige and upgrading your gear through standard missions first. Attempting to bypass these requirements is not possible, and being under-geared will lead to failure in the raid, wasting your time and resources.

The Colossal Titan Raid Strategy

The Colossal Titan Raid on Aberrant difficulty is a multi-phase encounter that requires tight coordination. While soloing is technically possible for highly skilled players with elite gear, it is significantly slower and carries a much higher risk of failure. Team farming is the recommended path for maximizing your drop chances per hour.

1. Phase 1 (Cannon Defense): The Colossal Titan is immune to standard blade attacks during this phase. Players must protect Eren from Pure Titans while designated cannon operators on the wall deal damage to the Colossal Titan. You need to reduce its HP by 50% to progress.
2. Phase 2 (Direct Combat): Once the Titan breaks through the wall, the encounter shifts to direct combat. This is where you utilize your best AoE perks and damage buffs.
3. Looting: After a successful clear, ensure you open the Free Raid Chest and the Emperor's Trove. These are your primary sources for the serum.

Community reports indicate that the most effective squad setup involves one dedicated cannon operator (who stays on the wall) and three players focusing on ground-level Titan clearing to keep Eren safe. If Eren dies or the Titan reaches the wall, the mission fails.

Maximizing Serum Drop Rates

The Colossal Serum is an RNG (Random Number Generation) drop. There is no guaranteed "pity" system that provides it after a set number of runs, though players typically report seeing a drop between 30 to 100+ runs.

Tip

• Luck Boosts: Before starting your raid session, redeem any available codes for Luck boosts. High Luck directly correlates to a better chance of the serum dropping from chests.
• Emperor's Trove Priority: Always prioritize opening the Emperor's Trove, as it typically offers a higher base drop rate (0.40% to 1.0%) compared to the Free Raid Chest (0.20% to 0.60%).
• Speed Runs: Focus on completing raids as quickly as possible. A coordinated team of Prestige 4-5 players can clear the raid in under 3 minutes, effectively tripling your drop chances per hour compared to a slower group.

If you find yourself stuck in a "dry spell" where the serum refuses to drop, do not get discouraged. The variance in RNG is significant; some players get lucky in 10 runs, while others hit 150. Focus on efficiency and volume.

Best Builds for the Colossal Titan

Once you obtain the serum, you need to build your Titan correctly to make the most of its kit. The Colossal Titan is a PvE beast, but it lacks mobility, so your build should lean into its strengths: AoE damage and raw power.

Arlert Family

The top choice for Colossal users. It provides +10% Colossal stats, +20% Nuke AoE, +10% Crit, and Shifter Regen. It is the only family that directly expands the radius of your nuke.

Fritz Family

A strong alternative for team play. It focuses on pure damage output, which is excellent if you are playing in a coordinated raid group and need to maximize your contribution to boss health reduction.

Equip the Colossal Scars artifact to further increase your Titan stats by 15%. For perks, prioritize Adaptation, Soul Feed, Immortal, and Founder's Blessing. Always invest 100% of your skill tree nodes into damage; avoid hybrid defense builds, as they dilute the Titan's primary purpose: clearing massive waves of enemies instantly.

Progression: Utilizing Titan Cards

A recent update has significantly improved the progression path for the Colossal Titan. Previously, maxing out your skill tree required grinding thousands of Titans, which was a time-consuming process.

You can now use Titan Cards to shortcut your mastery progression. If you find these items during your raids, save them for your Colossal Titan. Using a card can jump your skill level from 3 to 13 instantly, saving you hours of repetitive farming. This makes the Colossal Titan much more accessible to newer players who might not have had the time to max out masteries manually.

Frequently Asked Questions

Can I get the Colossal Serum solo?

It is technically possible, but highly discouraged. The raid mechanics require you to defend Eren while simultaneously firing cannons. Doing both alone is extremely difficult and inefficient, leading to fewer clears per hour and lower overall chances of getting the drop.

Is the Colossal Titan good for PvP?

Generally, no. The Colossal Titan is designed for PvE (raids and wave clearing). While its nuke can be devastating, its slow movement speed and long transformation cooldowns make it an easy target for mobile PvP opponents who can out-maneuver your AoE attacks.

What do I do if I get the serum?

Once you have the serum, equip it to unlock Titan Shifting. However, be cautious with Resonance levels. Do not adjust resonances above level 1 immediately, as this significantly increases the total XP required to level up. Focus on maxing out your skills and passives first.