(SPOLIERS AHEAD) The guide was a bit confusing but here's the endings with the story:
Ending 1:(Don't Kill Caesar) You end up running away from the Syn with Caesar without restoring your memories
Ending 2:(Don't Kill Caesar) You end up running away from the Syn with Alto without restoring your memories
Ending 3:(Don't Kill Caesar) You end up trying to run away from the Syn but they kill you. You end up dead. Alternate- If you choose the exact same path but choose to kill Caesar, then you get ending 4 but without Alto
Ending 4:(Kill Caesar) You end up having your memories restored at the Syn and end up with Alto
Ending 5:(Kill Caesar) You end up having your memories restored at the Syn but your lover, Caesar, is dead. So you end up alone(?)