Complex sentence: Felix decides to go after it with Sharkface while Locus stays at Alpha, with Felix telling him to kill Kimball quick if he gets the chance since they were friends after all.
Split into simpler sentences: Felix decides to go after it with Sharkface while Locus stays at Alpha. Before leaving, Felix tells Locus to kill Kimball quick if he gets the chance, since she and Felix were friends after all.