  We are considering the class of heterotic $\mathcal{N}=(2,2)$ Landau-Ginzburg
orbifolds with 9 fields corresponding to $A_1^9$ Gepner models. We classify all
of its Abelian discrete quotients and obtain 152 inequivalent models closed
under mirror symmetry with $\mathcal{N}=1,2$ and $4$ supersymmetry in 4D. We
compute the full massless matter spectrum at the Fermat locus and find a
universal relation satisfied by all models. In addition we give prescriptions
of how to compute all quantum numbers of the 4D states including their discrete
R-symmetries. Using mirror symmetry of rigid geometries we describe orbifold
and smooth Calabi-Yau phases as deformations away from the Landau-Ginzburg
Fermat locus in two explicit examples. We match the non-Fermat deformations to
the 4D Higgs mechanism and study the conservation of R-symmetries. The first
example is a $\mathbb{Z}_3$ orbifold on an E$_6$ lattice where the R-symmetry
is preserved. Due to a permutation symmetry of blow-up and torus K\"{a}hler
parameters the R-symmetry stays conserved also smooth Calabi-Yau phase. In the
second example the R-symmetry gets broken once we deform to the geometric
$\mathbb{Z}_3 \times \mathbb{Z}_{3,\text{free}}$ orbifold regime.
