LostSurvivor

v1.0.2·Updated 2026-09-30

Sometimes a lost survivor wanders the stage. Find it, befriend it, and keep it alive to make it stronger.

About this mod Author’s original text

Lost Survivor

Each time you enter a stage there's a chance a lost survivor (a random playable character, in its default skin) is wandering somewhere on the map. It's on your side and fights enemies on its own. Find it and press interact to befriend it.

How it works

  • Spawning: each stage has a configurable chance to spawn a random survivor, driven by the same AI as Goobo Jr. clones and Vengeance umbras. It appears on a random ground spot away from players.
  • Starting items: it spawns with random items. The cap scales with the stage: with the default 4 items per stage, stage 1 allows up to 4, stage 2 up to 8, stage 3 up to 12, and so on. The tier odds are configurable (76/16/4/4 white/green/red/boss by default).
  • Gold stash: while it's wild, gold from its kills goes into its own wallet instead of to you. The interact prompt shows how much it's holding (Befriend Mercenary ($240)).
  • Befriending: press Interact to befriend it. You get its whole stash, and it becomes your ally like a drone. It follows you, shows up in your ally list, and never despawns. You only lose it if it dies.
  • Growing stronger: each time a befriended survivor follows you into a new stage, it lands next to you once you touch down and copies random items from your inventory (default: 3 copies × stages completed). Items you have more stacks of are more likely to be copied.

Config

All settings are in BepInEx/config/com.lostsurvivor.LostSurvivor.cfg, and each one is documented in the file. If you have Risk of Options installed, you can also change them in-game under Mod Options. Changes apply on the next stage.

| Setting | Default | What it does |

|---|---|---|

| Spawn Chance | 15% | Chance per stage (per slot) |

| Max Per Stage | 2 | Spawn rolls per stage |

| Min Distance From Players | 60m | How far away it spawns |

| Survivor Blacklist | (empty) | Body names that never spawn |

| Items Per Stage | 4 | Item cap = this × stage number |

| Randomize Item Count | true | Random amount from 1 up to the cap, or always the cap |

| White/Green/Red/Boss Weight | 76/16/4/4 | Tier odds for the starting items |

| Bank Kill Gold | true | Its kills fill the stash instead of paying you |

| Copies Per Stage Cleared | 3 | Items copied from you per new stage × stages completed |

| Leash To Owner | true | Teleports back to you if it falls far behind |

Multiplayer

Only the host needs the mod for spawning and befriending to work. Clients should install it too, so they see the interact prompt and so befriended allies carry over between stages for them.

Final Notes

This is my first mod so expect there to be some bugs and incompatiblites with other mods. Though it for sure works with propersave.

Install & use Install: BepInEx plugin

  1. The archive from playbuff is the mod itself — usually a BepInEx plugin (a .dll or a plugin folder once unzipped).
  2. Recommended: use a community mod manager (such as r2modman) — pick this game, import the mod, and the manager sets up BepInEx and its dependencies for you.
  3. Manual route: install the BepInEx loader in the game folder, then drop the unzipped .dll or plugin folder into BepInEx/plugins/.
  4. Launch the game — the BepInEx console logs every plugin it loads; seeing this mod in the log means it is installed.

Mods with listed dependencies need those installed too, or they will not load. Options are usually changed in-game or in the plugin's config file.

Dependencies

Install these first, or the mod will not work:

bbepis-BepInExPack

File & checksum

Filename
LostSurvivor-1.0.2.zip
File size
31.8 KiB