  We present a comprehensive angle-resolved photoemission spectroscopy study of
Ca$_{1.8}$Sr$_{0.2}$RuO$_4$. Four distinct bands are revealed and along the
Ru-O bond direction their orbital characters are identified through a light
polarization analysis and comparison to dynamical mean-field theory
calculations. Bands assigned to $d_{xz}, d_{yz}$ orbitals display Fermi liquid
behavior with fourfold quasiparticle mass renormalization. Extremely heavy
fermions - associated with a predominantly $d_{xy}$ band character - are shown
to display non-Fermi-liquid behavior. We thus demonstrate that
Ca$_{1.8}$Sr$_{0.2}$RuO$_4$ is a hybrid metal with an orbitally selective Fermi
liquid quasiparticle breakdown.
