  The top forward-backward asymmetry (tAFB) measured at the Tevatron remains
one of the most puzzling outstanding collider anomalies. After two years of LHC
running, however, few models for tAFB remain consistent with LHC data. In this
paper we take a detailed look at the most promising surviving class of models,
namely light (m_G' <~ 450 GeV), broad axigluons. We show which models
simultaneously satisfy constraints from Tevatron and LHC top measurements,
hadronic resonance searches, and LEP precision electroweak (PEW) observables.
We consider three flavor structures: flavor-universal; down-type nonuniversal,
designed to ease constraints from LHC charge asymmetry measurements; and
top-type nonuniversal, designed to ameliorate constraints from PEW. We compute
contributions to the PEW observables from states in the minimal UV completion
of the axigluon model and demonstrate that new heavy fermions make the
constraints universally more stringent, while related contributions from new
scalars are much smaller, but act to relax the constraints. Paired dijet
searches from ATLAS and CMS rule out all narrow axiglue models, while the LHC
charge asymmetry measurement is less constraining than expected due to the high
central value measured by ATLAS. Excepting the tension with the CMS charge
asymmetry measurement, a broad axigluon is consistent with all data over the
entire mass range we consider (50 GeV <~m_G' <~450 GeV) in the flavor-universal
and top-type nonuniversal models, while it is consistent for m_G' >~200 GeV in
the down-type non-universal model. The LHC charge asymmetry remains the best
avenue for excluding, or observing, these models.
