Yui is trapped in the abandoned supply base, and the BETA have broken through the defense lines.  With no hope of escape, she attempts to destroy the prototype cannon to keep it from falling into the wrong hands...
and the Tank class, who are 
the most common of the BETA.
a la clase Tank, las cuales encabezan la 
mayor cantidad de unidades en la manada A de BETA.
a la clase Tank, las cuales encabezan la 
mayor cantidad de unidades en la manada A de BETA.
É mesmo. Ela também está combatendo os BETA conosco.