Duo Trials

v1.3.16·Updated 2026-06-19

11 Expeditions available. Balanced for duo play. 5 Vanilla-enemy levels, 6 Modded-enemy levels.

About this mod Author’s original text

Welcome to Duo Trials by Project Zaero.

  • This rundown is designed for duo play, starting with beginner difficulty leading into extreme intensity expeditions. Please report any issues you find to Project Zaero#9999 on Discord.

Features:

  • Verified duo clearable expeditions.
  • Progressively more challenging expeditions. A tier starts off beginner friendly, while E tier will challenge even the top 0.1% of duos.
  • 11 Expeditions currently available. 5 with Vanilla enemies only, 6 with custom enemies.
  • Main objectives are relatively easy, while sectors provide a significant challenge on all levels.
  • The first expedition of each tier will contain only vanilla enemies, the rest contain modded enemies.

Vanilla enemy rebalances & reworks.

Striker: Unchanged.

Shooter: Damage increased 5% -> 8%. Adjusted homing properties, longer cooldown between shots.

Hybrid: Damage increased 4% -> 6%. Barrage pattern reworked.

Giant Striker: Adjusted stagger & limb health breakpoints.

Giant Shooter: Removed.

Charger: Tentacle nerfed 18% -> 16%, punch buffed 4% -> 6%. Much more stagger resistant.

Giant Charger: Animation speed upscaled proportionate to their size, so they no longer animate in slow motion. Greatly increased stagger resistance and limb health.

Tank: Adjusted weakspot health values. Increased aggression.

Birthers: Adjusted weakspot health values. Significantly reduced animation speed.

Child Striker: Dies instantly to any damage. Moves much slower.

Spitters: Damage 4% -> 5%.

Shadow: No longer react to movement unless you are very close, but instead wake up to flashlights. Significantly faster with reduced health.

Giant Shadow: Same detection behavior as small shadows. Retro/R2 style aggression but worse.

Shadow Scout: Adjusted detection cycle. Model fixed to be a shooter model.

Other notable changes.

  • Infection health decay rate increased by 25%.
  • "Armor" (white hitmarkers) on boss enemies now deals 35% damage instead of 0.0001% damage. If they're low, shoot them anywhere!
  • Pouncers no longer have armor.
  • Chargers have a critical point at the center of their chest, and take critical damage to their back, with an "occiput" style center of back super damage bonus.
  • Foam on the floor is massively improved for stalling enemies.
  • Custom syringes with special properties spawn on most levels. Try them out!
  • Bio-Tracker has color coded enemy tags, with varying icons to make special enemy variants stick out.
  • Resources and consumables can be dropped back into containers to assist in planning out encounters.
  • Health Regen Cap 20% -> 25%, medipack healing 20% -> 25%.
  • Some levels have enemies that inflict status effects, including Bleed and Infection. If you have the "Bleeding!" status effect, medkits and regeneration effects from syringes will stop the bleeding instantly.
  • If you see a shooter fire blue projectiles, you're already dead.

Install & use Install: follow the bundled instructions

  1. Unzip the archive from playbuff and read the bundled readme / instructions first.
  2. Most mods rely on the game's mod loader — the usual route is a community mod manager (such as r2modman): pick this game, install, and it handles the loader and dependencies.
  3. For a manual install, put the mod files into the matching Mod / plugins folder inside the game directory.
  4. Launch the game to confirm it loaded; mods with listed dependencies need those installed as well.

Install locations vary a lot between mods — the bundled readme is the most reliable guide.

Dependencies

Install these first, or the mod will not work:

Panthr75-ExtraSyringeCustomizationFrog-GearPartCustomizationLocalia-PingEverythingUntilted-FasterHackingMinigameFlowaria-LGTunerFody55-GTFO_ShootInTheAirFrog-CleanClothesDex-Tweaker

File & checksum

Filename
Duo_Trials-1.3.16.zip
File size
1.5 MiB