
The Interloper is a formidable secret boss lurking within the realm of Absolum. This otherworldly entity bears a striking resemblance to the iconic Great Old One, Cthulhu, presenting a challenge that will leave players questioning the very nature of their existence within the game.
Characterized by its massive size, bizarre appearance, and tentacle-covered form, this boss can quickly bring your run to an abrupt end in this engaging roguelike adventure. To help you prepare for this encounter, we will delve into the optimal route to find The Interloper, strategies to defeat it, and the coveted rewards that await victors.
Navigating to The Interloper

The Interloper resides in Yeldrim, a location you can access only after completing several runs in Jaroba. Feel free to take a route you’re comfortable with, but if you’re looking for a suggested approach, consider my strategy.
Begin your journey by tackling the Mushtroll boss to acquire a free inspiration ability upfront. Locate Mushtroll by heading to the bottom right corner of the starting area and breaking the nearby rock.

Once you have defeated Mushtroll, proceed to Gazorg for a relatively easier fight, taking advantage of the plentiful healing opportunities available via the fish at the waterfall. Afterward, instead of crossing the bridge post-Gazorg, opt to leap over the edge into the misty area.
Your next target is the Underking. Defeating him will grant you passage to Yeldrim. Upon reaching the Haven, you will encounter two pathways. Choose the upper path that leads to a locked gate, where an NPC will present you with questions encoded in emotes. Replicate the emotes in the correct sequence to unlock the gate.
From this point, you will navigate past the Full-grown Horror and Twisted Horror. Eventually, you’ll arrive at a large chamber adorned with star constellations. Instead of following the indicated route, venture left of the statue and continue walking off-screen.
Once you hear a sound, a mystical doorway in the center should unveil itself. Prepare yourself; you are now entering the realm of The Interloper.
Strategies to Conquer The Interloper

The size of The Interloper may seem intimidating, but the encounter is structured into two phases. Initially, it will unleash attacks using its hands, eventually transitioning to its main body.
Stay vigilant to avoid the chaotic onslaught of tentacles and eye beams, as they can inflict considerable damage. Fortunately, The Interloper has limited follow-up attacks, allowing you brief moments to recuperate.
Phase One

This phase revolves around the floating hands that shoot eye beams from their palms. Your focus should be on damaging these hands, but maintain awareness of both hands to avoid being caught off-guard.
Refer to the following table detailing the attacks you’ll face during this phase:
Attacks |
Description |
Dodge, Deflect, or Clash |
---|---|---|
Laser Summon |
A target appears on the ground followed by two beams targeting that location. |
Dodge |
Hand Beams |
Both hands position themselves on the outer sides and unleash lasers, then retreat. |
Jump |
Hand Slam |
A hand hovers over your target position before slamming down. |
Dodge |
Hand Swipe |
A hand approaches low to the ground, turning the palm upwards before executing a swiping attack. |
Deflect or Clash |
Phase Two

In this phase, The Interloper becomes more actively involved.You will now confront its main body, which executes a variety of unpredictable moves.
Refer to the following table and accompanying video to assist you through this phase, although foreknowledge may not guarantee an easy time. Stay agile and ready for a challenging encounter.
Attacks |
Description |
Dodge, Deflect, or Clash |
---|---|---|
Laser Summon |
It shoots lasers into the air that subsequently generate targets on the ground, firing one after the other. |
Dodge |
Interdimensional Headbutt |
It dives into a portal and emerges at a different location, charging forward. |
Deflect or Clash |
Head Spin |
It drops headfirst to the ground and spins towards your position. |
Deflect or Clash |
Cosmic Explosions |
It fires cosmic projectiles that explode upon impact, creating a small AoE. |
Dodge |
Death From Above |
Diving into a brief invulnerability, it continuously fires lasers and later summons two smaller horrors. |
Dodge |
Rewards for Defeating The Interloper

The Interloper presents an exhilarating challenge within this cooperative game; however, it is essential to acknowledge that defeating this boss may not necessarily contribute to clearing your run. You are welcome to challenge The Interloper repeatedly, as the entrance remains accessible for future attempts.
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