diff --git a/.gitignore b/.gitignore
index eac6f531..1b91f113 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,6 +13,7 @@ dump/*
 *.arc
 *.ctx
 ctx.*
+!tools/orthrus.exe
 build.ninja
 ac-decomp.code-workspace
 assets/
diff --git a/README.MD b/README.MD
index 196b7c63..2c0ac959 100644
--- a/README.MD
+++ b/README.MD
@@ -17,41 +17,35 @@ Use `--recursive` when cloning to have ppcdis in the repository.
 
 ### Docker
 
-1. [Dump a copy of the game](./docs/extract_game.md) and extract **main.dol** and **foresta.rel.szs**.
-2. Decompress **foresta.rel.szs** with yaz0 found in *tools/* (`yaz0 -d foresta.rel.szs foresta.rel`).
-3. Place **main.dol** and **foresta.rel** in *dump/*.
-4. Place **forest_1st.arc** and **forest_2nd.arc** in *dump/*.
-5. Download the [CodeWarrior 1.3.2 and 1.2.5n compilers](https://files.decomp.dev/compilers_20230715.zip) and extract them to *tools/1.3.2/* and *tools/1.2.5n/*, respectively.
-6. Download the [CodeWarrior 1.3.2r compiler](https://mega.nz/file/WuBFTCLT#TmB5R4-1mEFkk4G1Vjn9_cHXRD9wOIH9CtOLaVSWEas) and extract it to *tools/1.3.2r/*.
-7. Install Docker.
-8. Build the Docker image (`docker build -t ac-decomp .`).
-9. Run configure.py (`docker run --rm -v ${PWD}:/ac-decomp ac-decomp python3 configure.py`).
-10. Run build.py (`docker run --rm -v ${PWD}:/ac-decomp ac-decomp python3 build.py`).
+1. [Dump a copy of the game](./docs/extract_game.md) and extract all files.
+2. Place **main.dol**, **foresta.rel.szs**, **forest_1st.arc**, and **forest_2nd.arc** in *dump/*.
+3. Download the [CodeWarrior 1.3.2, 1.3.2r, and 1.2.5n compilers](https://files.decomp.dev/compilers_latest.zip) and extract them to *tools/1.3.2/*, *tools/1.3.2r/*, and *tools/1.2.5n/*, respectively.
+4. Install Docker.
+5. Build the Docker image (`docker build -t ac-decomp .`).
+6. Run configure.py (`docker run --rm -v ${PWD}:/ac-decomp ac-decomp python3 configure.py`).
+7. Run build.py (`docker run --rm -v ${PWD}:/ac-decomp ac-decomp python3 build.py`).
 
 ### Build manually
 
 > ℹ️ When building manually from a work directory originally used for Docker, you will need to run `sudo ninja -t clean` for the build to execute properly.
 
-1. [Dump a copy of the game](./docs/extract_game.md) and extract **main.dol** and **foresta.rel.szs**.
-2. Decompress **foresta.rel.szs** with yaz0 found in *tools/* (`yaz0 -d foresta.rel.szs foresta.rel`).
-3. Place **main.dol** and **foresta.rel** in *dump/*.
-4. Place **forest_1st.arc** and **forest_2nd.arc** in *dump/*.
-5. Download the [CodeWarrior 1.3.2 and 1.2.5n compilers](https://files.decomp.dev/compilers_20230715.zip) and extract them to *tools/1.3.2/* and *tools/1.2.5n/*, respectively.
-6. Download the [CodeWarrior 1.3.2r compiler](https://mega.nz/file/WuBFTCLT#TmB5R4-1mEFkk4G1Vjn9_cHXRD9wOIH9CtOLaVSWEas) and extract it to *tools/1.3.2r/*.
-7. Install Python, pip, and [ninja](https://github.com/ninja-build/ninja/wiki/Pre-built-Ninja-packages#package-managers) using your package manager of choice.
-8. Install Python modules from requirements.txt (`pip install -r requirements.txt`).
-9. Install [wibo](https://github.com/decompals/wibo)
+1. [Dump a copy of the game](./docs/extract_game.md) and extract all files.
+2. Place **main.dol**, **foresta.rel.szs**, **forest_1st.arc**, and **forest_2nd.arc** in *dump/*.
+3. Download the [CodeWarrior 1.3.2, 1.3.2r, and 1.2.5n compilers](https://files.decomp.dev/compilers_latest.zip) and extract them to *tools/1.3.2/*, *tools/1.3.2r/*, and *tools/1.2.5n/*, respectively.
+4. Install Python, pip, and [ninja](https://github.com/ninja-build/ninja/wiki/Pre-built-Ninja-packages#package-managers) using your package manager of choice.
+5. Install Python modules from requirements.txt (`pip install -r requirements.txt`).
+6. Install version 0.6.13 of [wibo](https://github.com/decompals/wibo)
     - Wibo is a lightweight Wine replacement that's tailor-made for use with decomp projects. Regular Wine can be used if preferred, but for the purposes of this guide, these instructions will use wibo.
-    - Download [the latest GitHub release](https://github.com/decompals/wibo/releases/latest) and run `install ./wibo /usr/bin` to install it to your system.
-10. Install devkitPPC.
+    - Download [version 0.6.13 GitHub release](https://github.com/decompals/wibo/releases/tag/0.6.13) and run `install ./wibo /usr/bin` to install it to your system.
+7. Install devkitPPC.
     - To get devkitPPC, you'll need [devkitPro Pacman](https://devkitpro.org/wiki/devkitPro_pacman#Installing_devkitPro_Pacman).
         - Run `dkp-pacman -S devkitPPC` once dkp-pacman is installed to install devkitPPC.
         - Set the `DEVKITPPC` environment variable to */opt/devkitpro/devkitPPC*.
-11. Set the `N64_SDK` environment variable to the path of your libultra or equivalent headers. If you need headers, you can use the ones from [ultralib](https://github.com/decompals/ultralib).
+8. Set the `N64_SDK` environment variable to the path of your libultra or equivalent headers. If you need headers, you can use the ones from [ultralib](https://github.com/decompals/ultralib).
     - Headers should be located at `$N64_SDK/ultra/usr/include`.
-    - You may need to modify `Gpopmtx`'s `param` member to be `unsigned int` in **gbi.h**.
-12. Run `python3 configure.py`.
-13. Run `python3 build.py`.
+    - You must modify `Gpopmtx`'s `param` member to be `unsigned int` in **gbi.h**.
+9. Run `python3 configure.py`.
+10. Run `python3 build.py`.
 
 ## Quick Guides
 - [Dumping Game Files](./docs/extract_game.md)
diff --git a/build.py b/build.py
index d41e0f33..c62b1169 100644
--- a/build.py
+++ b/build.py
@@ -3,6 +3,7 @@ import sys
 import os
 import hashlib
 import argparse
+import common as c
 
 # List of Ninja build targets
 NINJA_BUILD_TARGETS = [ ['src/data/bin1', 'out/forest_1st.arc', 'dump/forest_1st.arc'], ['src/data/bin2', 'out/forest_2nd.arc', 'dump/forest_2nd.arc'] ]
@@ -92,10 +93,19 @@ if __name__ == "__main__":
             else:
                 print(f"No changes in {target[0]}, skipping build.")
         try:
+            # Check if foresta.rel.szs exists but not foresta.rel, and if so, decompress
+            if not os.path.exists(c.REL) and os.path.exists(c.REL_SZS):
+                print("Decompressing foresta.rel.szs to foresta.rel")
+                subprocess.call([f'./{c.ORTHRUS}', 'ncompress', 'yaz0', '-d', c.REL_SZS, c.REL])
+
             if args.v:
                 subprocess.run(['ninja', '-v'], check=True)
             else:
                 subprocess.run(['ninja'], check=True)
+                # Compress foresta.rel
+                if os.path.exists(c.REL_OUT):
+                    print("Compressing foresta.rel to foresta.rel.szs")
+                    subprocess.call([f'./{c.ORTHRUS}', 'ncompress', 'yaz0', '-c', c.REL_OUT, c.REL_SZS_OUT])
         except subprocess.CalledProcessError as e:
             print(f"Error running Ninja build")
             sys.exit(1)
diff --git a/common.py b/common.py
index 1cb8c978..bdd6122f 100644
--- a/common.py
+++ b/common.py
@@ -209,6 +209,7 @@ FORCEFILESGEN = f"{PYTHON} {PPCDIS}/forcefilesgen.py"
 TOOLS = "tools"
 CODEWARRIOR = os.path.join(TOOLS, "1.3.2")
 CODEWARRIOR_RODATA_POOL_FIX = os.path.join(TOOLS, "1.3.2r")
+ORTHRUS = os.path.join(TOOLS, "orthrus")
 SDK_CW = os.path.join(TOOLS, "1.2.5n")
 CC = os.path.join(CODEWARRIOR, "mwcceppc.exe")
 CC_R = os.path.join(CODEWARRIOR_RODATA_POOL_FIX, "mwcceppc.exe")
@@ -219,6 +220,8 @@ if platform != "win32":
     CC_R = f"wibo {CC_R}"
     OCC = f"wibo {OCC}"
     LD = f"wibo {LD}"
+else:
+    ORTHRUS = os.path.join(TOOLS, "orthrus.exe")
 
 # DevkitPPC
 DEVKITPPC = os.environ.get("DEVKITPPC")
@@ -255,6 +258,7 @@ REL_DISASM_OVERRIDES = f"{CONFIG}/rel_disasm_overrides.yml"
 # Binaries
 DOL = f"{ORIG}/static.dol" # read in python code
 REL = f"{ORIG}/foresta.rel" # read in python code
+REL_SZS = f"{ORIG}/foresta.rel.szs"
 DOL_YML = f"{CONFIG}/dol.yml"
 REL_YML = f"{CONFIG}/rel.yml"
 DOL_SHA = f"{ORIG}/static.dol.sha1"
@@ -288,6 +292,7 @@ DOL_ELF = f"{BUILDDIR}/static.elf"
 REL_PLF = f"{BUILDDIR}/foresta.plf"
 DOL_OUT = f"{OUTDIR}/static.dol"
 REL_OUT = f"{OUTDIR}/foresta.rel"
+REL_SZS_OUT = f"{OUTDIR}/foresta.rel.szs"
 DOL_MAP = f"{OUTDIR}/static.map"
 REL_MAP = f"{OUTDIR}/foresta.map"
 
diff --git a/configure.py b/configure.py
index 7735de22..f0e32ef4 100644
--- a/configure.py
+++ b/configure.py
@@ -905,6 +905,7 @@ n.build(
     inputs = c.REL_SHA,
     implicit = [c.REL_OUT]
 )
+
 n.default(c.REL_OK)
 
 # Optional full binary disassembly
diff --git a/tools/orthrus b/tools/orthrus
new file mode 100755
index 00000000..8c559c25
Binary files /dev/null and b/tools/orthrus differ
diff --git a/tools/orthrus.exe b/tools/orthrus.exe
new file mode 100644
index 00000000..dde42933
Binary files /dev/null and b/tools/orthrus.exe differ
diff --git a/tools/yaz0 b/tools/yaz0
deleted file mode 100755
index 372c7633..00000000
Binary files a/tools/yaz0 and /dev/null differ
diff --git a/tools/yaz0.exe b/tools/yaz0.exe
deleted file mode 100644
index 5f443447..00000000
Binary files a/tools/yaz0.exe and /dev/null differ