diff --git a/ersc-script.sh b/ersc-script.sh
index 74c020b..37abc10 100755
--- a/ersc-script.sh
+++ b/ersc-script.sh
@@ -1,8 +1,14 @@
 #!/bin/bash
+set -euo pipefail
 
 #gets latest download url from github
 sc_download_url=$(curl -s "https://api.github.com/repos/LukeYui/EldenRingSeamlessCoopRelease/releases/latest" | jq -r '.assets[0].browser_download_url')
 
+if [[ -z "$sc_download_url" || "$sc_download_url" == "null" ]]; then
+    echo "Failed to retrieve download URL"
+    exit 1
+fi
+
 #find elden ring install path
 eldenring_dir=$(find / -path '*/Game/*' -iname eldenring.exe -printf '%h\n' -quit 2>/dev/null)
 
@@ -13,7 +19,7 @@ if [[ $input == "n" || $input == "N" || $input == "No" || $input == "no" ]]; the
     if test -f "$input/eldenring.exe"; then
         echo "Correct Elden Ring directory"
         eldenring_dir=$input
-        echo $eldenring_dir
+        echo "$eldenring_dir"
     else
         echo "Incorrect Elden Ring directory. 'eldenring.exe' not found at provided path. Exiting..."
         exit 1
@@ -23,16 +29,16 @@ fi
 input=""
 
 echo "Creating temp download folder"
-mkdir -p ./ersc-download
-cd ./ersc-download
+temp_dir=$(mktemp -d)
+cd "$temp_dir"
 
 echo "Downloading Seamless Coop"
 echo "Download Url: $sc_download_url"
-wget -q $sc_download_url
+wget -q -O seamlesscoop.zip "$sc_download_url"
 
 echo "Unzipping downloaded files"
-unzip -q Seamless*
-rm Seamless*.zip
+unzip -q seamlesscoop.zip
+rm seamlesscoop.zip
 
 # If seamless coop settings exist in install directory, ask the user whether they want to replace the settings file
 # If 'no', will delete the empty settings file, so it doesn't get overwritten when copying the files 
@@ -47,6 +53,11 @@ echo "Moving source files to Elden Ring Directory"
 rsync -r --remove-source-files * "$eldenring_dir"
 
 echo "Deleting temp download folder"
-cd ../
-rm -r ./ersc-download
+
+cleanup() {
+    rm -rf "$temp_dir"
+}
+
+trap cleanup EXIT
+
 echo "Done"