If you want to survive the hostile sentient war machines in the opening hours, the best starting weapons Xanthiom 2 players can assemble rely on ditching Captain Grisham’s default blaster for the Castor Rifle base and combining it with the Thunder element mod. Because MathanGames built this Metroidvania around a modular gun customization system rather than static weapon drops, your "weapon" is actually a fluid loadout of interchangeable parts. Balancing damage, fire rate, and projectile distance is the core combat loop. Here is exactly which parts to hunt down first, where they are hidden, and how to configure your tech nodes to melt the early bosses.
Locating the Castor Rifle Base
The Castor Rifle is the first major structural upgrade you can find, and it fundamentally changes how your projectiles behave. Unlike the starting module, which fires a weak, standard horizontal pellet, the Castor Rifle allows for sustained, thicker beam patterns that make hitting erratic biological experiments much easier.
To find it, you need to navigate to the first major vertical shaft in the opening biome. Once you acquire the basic dash ability from the ruined laboratory, scale the right-side wall until you spot a locked kinetic door. The platforming sequence here requires precise timing, as the sentry drones patrol in an overlapping figure-eight pattern. Wait for the lower drone to sweep left, dash across the gap, and immediately wall-jump up to the terminal to unlock the Castor Rifle.
Equipping this base immediately increases your hitbox size. It serves as the foundation for the millions of potential builds the game engine supports, but early on, its primary value is raw consistency.
Xanthiom 2 in-game screenshot
Mastering the Three-Pillar Stat System
Before you start slotting in every mod you find, you must understand the underlying math of Captain Grisham's arsenal. Every weapon part in Xanthiom 2 influences three core pillars: Damage Output, Fire Rate, and Projectile Distance.
1. Damage Output This is your raw kinetic or elemental impact. Upgrading this is tempting, but high-damage parts carry massive weight penalties. If you stack too much damage without counterbalancing it, your gun will fire once every two seconds.
2. Fire Rate Crucial for clearing out the smaller, swarming biological experiments that populate the early vertical shafts. High fire rate builds synergize beautifully with elemental effects, as the rapid procs create a continuous web of damage. However, rapid-fire parts usually slash your effective range.
3. Projectile Distance Often ignored by beginners, distance is arguably your most important survival stat. The sentient war machines in the second biome have devastating melee attacks. If your projectile distance is penalized too heavily by your other mods, you will be forced to fight them in close quarters. Keeping a balanced distance stat allows you to snipe erratic targets from the safety of a different platform.
Early Elemental Mods: Thunder vs. Poison
Once you have a solid structural base, you need elemental damage. The game forces a strict tradeoff: prioritizing high damage usually costs you fire rate or projectile distance. You cannot max out all three stats in the first few hours.
Securing the Thunder Element
For general exploration, the Thunder element is the undisputed king of early-game crowd control. When applied to the Castor Rifle, it creates a chain-lightning effect that arcs between multiple weak enemies.
- Location: Found after defeating the first mini-boss in the upper facility.
- Tradeoff: The Thunder mod heavily penalizes your distance stat. Your shots will fizzle out quickly, forcing you to play at close-to-medium range.
- Verdict: Ideal for clearing rooms filled with flying enemies. It fills the screen with electricity, ensuring you do not take chip damage from swarms.
The Poison Effect Mod
When you hit the first major boss fight, crowd control becomes useless. You need single-target DPS, which is where the Poison effect shines.
- Location: Hidden behind a breakable floor in the lower fungal caverns.
- Tradeoff: Poison drastically reduces your fire rate but adds a stacking damage-over-time (DOT) debuff to the enemy.
- Verdict: Swap to this before boss doors. Hit the boss three times to apply the maximum DOT stack, then focus entirely on dodging their attack patterns while the poison drains their health bar.
Xanthiom 2 in-game screenshot
The Spread Configuration
Veterans of the prequel will remember the chaotic, screen-filling projectile spreads, and the sequel brings back these mechanics early. By combining a split-shot mod with your Castor Rifle, you can create a wide cone of fire.
This is highly effective against the shielded war machines found in the second biome. Because their shields only block direct frontal assaults, a spread configuration allows stray projectiles to clip their unarmored sides. If you pair a spread mod with the Thunder element, you effectively create a wall of electricity that nullifies incoming enemy projectiles. Just be aware that running a spread mod alongside an element will tank your fire rate to agonizingly slow levels until you find dedicated fire-rate upgrade nodes later in the game. To mitigate this, try using short, controlled bursts rather than holding the trigger down, allowing your energy reserves to refresh between volleys.
Essential Tech Nodes for Combat
Weapons are only half the equation in Xanthiom 2. Captain Grisham can also equip Tech Nodes—passive enhancements hidden across the game's six areas. There are 15 in total, but you can only equip 4 at any one time during the early game.
The Weak-Wall Detector
The most critical early node isn't a combat buff; it is the Weak-Wall Detector. Because so many powerful weapon mods are hidden behind destructible environments, equipping this node ensures you do not miss crucial arsenal upgrades. It emits a faint audio cue and visual ping when you are near a secret area.
Screen Capture Optimization
Another vital tool tied to your exploration is the screen capture system. Xanthiom 2 gives you 16 picture map markers to place anywhere in the world. While not a weapon itself, using these slots to photograph inaccessible kinetic doors or out-of-reach weapon caches ensures you know exactly where to return once your loadout improves. Never rely on memory when backtracking through a map this dense.
Fast Travel Synergies
Unlike its predecessor, Xanthiom 2 allows fast travel from any savepoint right from the beginning. This fundamentally changes how you should approach weapon builds. If you encounter a boss that resists your Poison effect, simply fast travel back to a previous hub, swap your active Tech Nodes to boost fire rate, reconfigure your gun for raw kinetic damage, and warp back. You are never locked into a bad build.
Xanthiom 2 in-game screenshot
Frequently Asked Questions
Are the weapons in Xanthiom Zero Resimulated the same? No. Xanthiom 2 comes bundled with Xanthiom Zero Resimulated (a from-the-ground-up remake of the prequel), but the two games have different arsenals. The sequel features a significantly more varied and complex customization system with millions of potential combinations, whereas the prequel remake keeps its simpler, original loadouts.
Do I need to play the prequel first to understand the weapons? While MathanGames includes the Resimulated prequel on the main menu and advises playing the sequel first for plot reasons, your weapon progression does not carry over between the two games. Treat them as separate, self-contained campaigns with entirely different pacing for their weapon unlocks.
Can I increase my equipped Tech Nodes beyond four? Yes. While you are capped at 4 active slots for the majority of the early and mid-game, a late-game upgrade hidden in the final biome allows you to equip additional nodes.
Is it better to upgrade damage or fire rate early? Early on, prioritize damage and elemental effects (like Poison). Your base fire rate is sufficient for the first two biomes, and enemies have high enough health pools that weak, rapid shots will leave you exposed for too long.