diff --git a/azure-pipelines-ext.cs b/azure-pipelines-ext.cs
deleted file mode 100644
index 1e8142b09..000000000
--- a/azure-pipelines-ext.cs
+++ /dev/null
@@ -1,34 +0,0 @@
-// This file is used in the Azure Pipelines PowerShell scripts via:
-// Add-Type -Path "azure-pipelines-ext.cs"
-
-// Note that this file is restricted to C# 5.0
-
-using System;
-using System.IO;
-using System.Text;
-using System.Security.Cryptography;
-using System.Globalization;
-using System.Net;
-using System.IO.Compression;
-using System.Collections.Generic;
-using System.Text.RegularExpressions;
-using System.Linq;
-using System.Reflection;
-
-public class EverestPS {
-
-    class ZipPathEncoder : UTF8Encoding {
-        public ZipPathEncoder()
-            : base(true) {
-        }
-        public override byte[] GetBytes(string s) {
-            return base.GetBytes(s.Replace("\\", "/"));
-        }
-    }
-    public static UTF8Encoding ZipPathEncoding = new ZipPathEncoder();
-
-    public static void Zip(string dir, string file) {
-        ZipFile.CreateFromDirectory(dir, file, CompressionLevel.Optimal, false, ZipPathEncoding);
-    }
-
-}
diff --git a/azure-pipelines-postbuild.ps1 b/azure-pipelines-postbuild.ps1
index f08735c78..8f37ac3cf 100644
--- a/azure-pipelines-postbuild.ps1
+++ b/azure-pipelines-postbuild.ps1
@@ -1,7 +1,6 @@
 Add-Type -AssemblyName System.IO.Compression.FileSystem
-Add-Type -Path "azure-pipelines-ext.cs" -ReferencedAssemblies "System.IO.Compression.FileSystem"
 
-$OLYMPUS="$env:Build_ArtifactStagingDirectory/olympus/"
+$OLYMPUS="$env:BUILD_ARTIFACTSTAGINGDIRECTORY/olympus/"
 if ($OLYMPUS -eq "/olympus/") {
 	$OLYMPUS = "./tmp-olympus/"
 }
@@ -15,9 +14,46 @@ New-Item -ItemType "directory" -Path $OLYMPUS/meta
 New-Item -ItemType "directory" -Path $OLYMPUS/build
 
 Write-Output "Building Olympus build artifact"
-# Azure Pipelines apparently hates to write to the artifact staging dir directly.
-[EverestPS]::Zip("$env:Build_ArtifactStagingDirectory/main", "olympus-build.zip")
-Move-Item -Path "olympus-build.zip" -Destination $ZIP
+$compress = @{
+	Path = "$env:BUILD_ARTIFACTSTAGINGDIRECTORY/main"
+	CompressionLevel = "Optimal"
+	DestinationPath = "$ZIP"
+}
+Compress-Archive @compress
 
 Write-Output "Building Olympus metadata artifact"
 Write-Output (Get-Item -Path $ZIP).length | Out-File -FilePath $OLYMPUS/meta/size.txt
+
+# lib-stripped setup
+if ([string]::IsNullOrEmpty("$env:BIN_URL") -or ($env:BIN_URL -eq '$(BIN_URL)')) {
+	Write-Output "Skipping lib-stripped artifact"
+	Exit 0
+}
+
+$LIB_STRIPPED="$env:BUILD_ARTIFACTSTAGINGDIRECTORY/lib-stripped"
+if ($LIB_STRIPPED -eq "/lib-stripped") {
+	$LIB_STRIPPED = "./tmp-lib-stripped"
+}
+
+Write-Output "Creating lib-stripped artifact directories"
+Remove-Item -ErrorAction Ignore -Recurse -Force -Path $LIB_STRIPPED
+New-Item -ItemType "directory" -Path $LIB_STRIPPED
+New-Item -ItemType "directory" -Path $LIB_STRIPPED/build
+
+Write-Output "Downloading Celeste package"
+$creds = [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes("$($env:BIN_USERNAME):$($env:BIN_PASSWORD)"))
+$headers = @{'Authorization'= "Basic $creds"}
+Invoke-WebRequest -URI "$env:BIN_URL/Celeste_Linux.zip" -OutFile "$env:AGENT_TEMPDIRECTORY/Celeste.zip" -Headers $headers
+Expand-Archive -Path "$env:AGENT_TEMPDIRECTORY/Celeste.zip" -DestinationPath $LIB_STRIPPED
+
+Write-Output "Applying Everest patch"
+Copy-Item -Path "$env:BUILD_ARTIFACTSTAGINGDIRECTORY/main/*" -Destination $LIB_STRIPPED
+Start-Process -FilePath "mono" -ArgumentList "$LIB_STRIPPED/MiniInstaller.exe" -WorkingDirectory $LIB_STRIPPED -Wait
+
+Write-Output "Generating stripped files"
+$files = Get-ChildItem -Path "$LIB_STRIPPED/*" -Include *.dll,*.exe
+foreach ($dll in $files) {
+	mono-cil-strip -q $dll
+}
+Copy-Item $files -Destination "$LIB_STRIPPED/build"
+Write-Host "##vso[task.setvariable variable=lib_stripped]True"
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index f240e39e4..5a50922d6 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -4,7 +4,7 @@
 # https://docs.microsoft.com/azure/devops/pipelines/apps/windows/dot-net
 
 pool:
-  vmImage: 'windows-latest'
+  vmImage: 'ubuntu-latest'
 
 variables:
   solution: '**/*.sln'
@@ -54,10 +54,15 @@ steps:
 
 # Post-build steps.
 - task: PowerShell@2
+  name: PostBuild
   condition: succeeded()
   displayName: 'Run azure-pipelines-postbuild.ps1'
   inputs:
     filePath: 'azure-pipelines-postbuild.ps1'
+  env:
+    BIN_URL: $(BIN_URL)
+    BIN_USERNAME: $(BIN_USERNAME)
+    BIN_PASSWORD: $(BIN_PASSWORD)
 
 # Create and "publish" Olympus artifacts.
 - task: PublishBuildArtifacts@1
@@ -77,9 +82,19 @@ steps:
     artifactName: 'olympus-build'
     publishLocation: 'Container'
 
+# Create and "publish" mono-cil-strip binary artifacts
+- task: PublishBuildArtifacts@1
+  condition: eq(variables['PostBuild.lib_stripped'], 'True')
+  displayName: 'Publish lib-stripped artifact'
+  continueOnError: true
+  inputs:
+    pathtoPublish: '$(Build.ArtifactStagingDirectory)/lib-stripped/build/'
+    artifactName: 'lib-stripped'
+    publishLocation: 'Container'
+
 # Announce new stable versions on Discord (#modding_updates).
 - script: |
-    set /a "BUILD_NUMBER=$(Build.BuildId)+$(Build.BuildIdOffset)"
-    curl -H "Content-Type: application/json" -d "{\"content\": \"**A new Everest stable was just released!**\nThe latest stable version is now **%BUILD_NUMBER%**.\"}" $(WEBHOOK_URL)
+    declare -i BUILD_NUMBER=$(Build.BuildId)+$(Build.BuildIdOffset)
+    curl -H "Content-Type: application/json" -d "{\"content\": \"**A new Everest stable was just released!**\nThe latest stable version is now **$BUILD_NUMBER**.\"}" $(WEBHOOK_URL)
   displayName: 'Celeste Discord webhook'
   condition: and(succeeded(), eq(variables['Build.SourceBranch'], 'refs/heads/stable'))