here is my package xml .. have it to remove and lock the uninstall option from users. 
<?xml version="1.0" encoding="utf-8"?>
<Package>
  <Name>Greenshot</Name>
  <Description>1.2.8.12 (11.23.15)</Description>
  <ShutdownOption>0</ShutdownOption>
  <ShutdownTime>0</ShutdownTime>
  <MaxDuration>900</MaxDuration>
  <Rescan>True</Rescan>
  <RunMode>-1</RunMode>
  <Steps>
    <Step>
      <Nr>1</Nr>
      <Name>Check if Installed</Name>
      <Type>5</Type>
      <ReturnCodes></ReturnCodes>
      <Success>2</Success>
      <Failure>4</Failure>
      <Path></Path>
      <Parameters></Parameters>
      <MSIParameters></MSIParameters>
      <MSIName></MSIName>
      <MSIVersion></MSIVersion>
      <Command></Command>
      <EditMode>False</EditMode>
      <Conditions>
        <Condition>
          <Type>1</Type>
          <SpecOne>C:\Program Files\Greenshot</SpecOne>
          <SpecTwo>Greenshot.exe</SpecTwo>
          <Operator>1</Operator>
          <Value></Value>
        </Condition>
      </Conditions>
    </Step>
    <Step>
      <Nr>2</Nr>
      <Name>Upgrade</Name>
      <Type>5</Type>
      <ReturnCodes></ReturnCodes>
      <Success>3</Success>
      <Failure>-2</Failure>
      <Path></Path>
      <Parameters></Parameters>
      <MSIParameters></MSIParameters>
      <MSIName></MSIName>
      <MSIVersion></MSIVersion>
      <Command></Command>
      <EditMode>False</EditMode>
      <Conditions>
        <Condition>
          <Type>1</Type>
          <SpecOne>C:\Program Files\Greenshot</SpecOne>
          <SpecTwo>greenshot.exe</SpecTwo>
          <Operator>9</Operator>
          <Value>1.2.8.12</Value>
        </Condition>
        <Condition>
          <Type>1</Type>
          <SpecOne>C:\Program Files\Greenshot</SpecOne>
          <SpecTwo>greenshot.exe</SpecTwo>
          <Operator>1</Operator>
          <Value></Value>
        </Condition>
      </Conditions>
    </Step>
    <Step>
      <Nr>3</Nr>
      <Name>Terminate Greenshot.exe</Name>
      <Type>3</Type>
      <ReturnCodes>0,1641,3010</ReturnCodes>
      <Success>-1</Success>
      <Failure>-1</Failure>
      <Path>greenshot.exe</Path>
      <Parameters>/f /t</Parameters>
      <MSIParameters></MSIParameters>
      <MSIName></MSIName>
      <MSIVersion></MSIVersion>
      <Command>taskkill /im greenshot.exe /f /t</Command>
      <EditMode>False</EditMode>
      <Conditions />
    </Step>
    <Step>
      <Nr>4</Nr>
      <Name>Install Greenshot</Name>
      <Type>1</Type>
      <ReturnCodes>0,1641,3010</ReturnCodes>
      <Success>-1</Success>
      <Failure>-1</Failure>
      <Path>{PackageShare}\Installers\greenshot\greenshot_setup.exe</Path>
      <Parameters>/VERYSILENT /NOCANCEL /SUPPRESSMSGBOXES /LANG=English /NORESTART /SP-</Parameters>
      <MSIParameters>/i /qn /norestart</MSIParameters>
      <MSIName></MSIName>
      <MSIVersion></MSIVersion>
      <Command>"{PackageShare}\Installers\greenshot\greenshot_setup.exe" /VERYSILENT /NOCANCEL /SUPPRESSMSGBOXES /LANG=English /NORESTART /SP-</Command>
      <EditMode>False</EditMode>
      <Conditions />
    </Step>
    <Step>
      <Nr>5</Nr>
      <Name>wait 5</Name>
      <Type>2</Type>
      <ReturnCodes>0,1641,3010</ReturnCodes>
      <Success>-1</Success>
      <Failure>-1</Failure>
      <Path></Path>
      <Parameters></Parameters>
      <MSIParameters></MSIParameters>
      <MSIName></MSIName>
      <MSIVersion></MSIVersion>
      <Command>timeout /t 5 /nobreak</Command>
      <EditMode>False</EditMode>
      <Conditions />
    </Step>
    <Step>
      <Nr>6</Nr>
      <Name>Remove uninstall icon</Name>
      <Type>2</Type>
      <ReturnCodes>0,1641,3010</ReturnCodes>
      <Success>-1</Success>
      <Failure>-1</Failure>
      <Path></Path>
      <Parameters></Parameters>
      <MSIParameters></MSIParameters>
      <MSIName></MSIName>
      <MSIVersion></MSIVersion>
      <Command>for /r "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Greenshot" %d in (UNINST~1.LNK) do @if exist "%d" del /q /f "%d"</Command>
      <EditMode>False</EditMode>
      <Conditions />
    </Step>
    <Step>
      <Nr>7</Nr>
      <Name>wait 5</Name>
      <Type>2</Type>
      <ReturnCodes>0,1641,3010</ReturnCodes>
      <Success>-1</Success>
      <Failure>-1</Failure>
      <Path></Path>
      <Parameters></Parameters>
      <MSIParameters></MSIParameters>
      <MSIName></MSIName>
      <MSIVersion></MSIVersion>
      <Command>timeout /t 5 /nobreak</Command>
      <EditMode>False</EditMode>
      <Conditions />
    </Step>
    <Step>
      <Nr>8</Nr>
      <Name>Remove Uninstall Program</Name>
      <Type>2</Type>
      <ReturnCodes>0,1641,3010</ReturnCodes>
      <Success>-1</Success>
      <Failure>-1</Failure>
      <Path></Path>
      <Parameters></Parameters>
      <MSIParameters></MSIParameters>
      <MSIName></MSIName>
      <MSIVersion></MSIVersion>
      <Command>for /r "C:\Program Files\Greenshot" %d in (unins000.exe) do @if exist "%d" del /q /f "%d"</Command>
      <EditMode>False</EditMode>
      <Conditions />
    </Step>
    <Step>
      <Nr>9</Nr>
      <Name>wait 5</Name>
      <Type>2</Type>
      <ReturnCodes>0,1641,3010</ReturnCodes>
      <Success>-1</Success>
      <Failure>-1</Failure>
      <Path></Path>
      <Parameters></Parameters>
      <MSIParameters></MSIParameters>
      <MSIName></MSIName>
      <MSIVersion></MSIVersion>
      <Command>timeout /t 5 /nobreak</Command>
      <EditMode>False</EditMode>
      <Conditions />
    </Step>
    <Step>
      <Nr>10</Nr>
      <Name>Lock Control Pannel Ad_Remove</Name>
      <Type>2</Type>
      <ReturnCodes>0,1641,3010</ReturnCodes>
      <Success>-1</Success>
      <Failure>-1</Failure>
      <Path></Path>
      <Parameters></Parameters>
      <MSIParameters></MSIParameters>
      <MSIName></MSIName>
      <MSIVersion></MSIVersion>
      <Command>Reg.exe add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Greenshot_is1" /v "NoModify" /t REG_DWORD /d "1" /f && Reg.exe add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Greenshot_is1" /v "NoRemove" /t REG_DWORD /d "1" /f && Reg.exe add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Greenshot_is1" /v "NoRepair" /t REG_DWORD /d "1" /f</Command>
      <EditMode>False</EditMode>
      <Conditions />
    </Step>
    <Step>
      <Nr>11</Nr>
      <Name>Enable Auto-Start</Name>
      <Type>2</Type>
      <ReturnCodes>0,1641,3010</ReturnCodes>
      <Success>-2</Success>
      <Failure>-3</Failure>
      <Path></Path>
      <Parameters></Parameters>
      <MSIParameters></MSIParameters>
      <MSIName></MSIName>
      <MSIVersion></MSIVersion>
      <Command>Reg.exe add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Greenshot" /t REG_SZ /d "C:\Program Files\Greenshot\Greenshot.exe" /f</Command>
      <EditMode>False</EditMode>
      <Conditions />
    </Step>
  </Steps>
  <SoftwareVersion>6013</SoftwareVersion>
</Package>