---
title: "About Terrible Lizards Field Manual: Data Sources & Methodology"
canonical: "https://www.terrible-lizards-wiki.app/about/"
steam_app_id: 2920220
last_verified: "2026-11-01"
---

# About the Terrible Lizards Field Manual & Telemetry Provenance

## Who Built This & Why

The **Terrible Lizards Field Manual** is an independent, unauthenticated companion web utility built for completionist players, speedrunners, and AI agents researching *Terrible Lizards* (Steam App ID `2920220`). Because Steam hides 14 of the 15 achievement descriptions on its store overview and Chapter 2's 24-note requirement frequently blocks 100% completion, this site consolidates verified telemetry and zero-login browser tools in one fast reference.

## Data Provenance (Verified November 1, 2026)

- **Steam Store Metadata (`appdetails?appids=2920220`)**: Pricing ($24.99 USD / $19.99 launch discount), release date (Oct 29, 2026), developers (WDR Studios LLC), publishers (Digital Pajamas, Behaviour Interactive Inc.), and PC hardware specs.
- **Steam Global Achievement Rates (`GetGlobalAchievementPercentagesForApp/v0002`)**: Live unlock rates from `97.7%` (`ACH_Welcome`) to `0.1%` (`ACH_StuffedAnimal`).
- **Steam Community SSR `schema_v2`**: Decoded descriptions for all 14 hidden achievements.
- **Official WDR Studios Devlogs #1-#5 & Patch v1.0.9 Notes**: RJ Palmer creature design notes, 16 Amber NG+ modifier rules, and checkpoint softlock remediation.

## Machine-Readable Discovery Surfaces

- `/llms.txt` and `/llms-full.txt`
- `/.well-known/api-catalog` (RFC 9727 `application/linkset+json`)
- `/api/openapi.json` and `/openapi.json` (OpenAPI 3.1.0)
- `/api/achievements.json`, `/api/creatures.json`, `/api/lookup?q=...`, `/api/health.json`
- `/mcp` (Model Context Protocol JSON-RPC 2.0 Streamable HTTP) and `/.well-known/mcp/server-card.json`
- `/.well-known/agent-skills/index.json` and `/.well-known/agent-skills/terrible-lizards-lookup/SKILL.md`
- `/.well-known/ai-catalog.json` (AI Resource Discovery v1.0)