Right click Panel > Add to Panel, double click Force Quit. Hey presto, Force Quit applet is added to panel.
System Preferences > Keyboard Shorttcuts, scroll down to Run a Terminal, then pick your shortcut keys.
Alternately, install Yakuake or Tilda, both drop down terminals like the one in Quake.
Intel i7 LMDE 2. Daily driver Toshiba Chromebook