if you have the two weapon fighting and improved two weapon fighting feats, and your attacks are regularly +12/+7 for the on hand and +13/+8 for the off hand. With the two weapon fighting penalties, the attacks would be +10/+5 for the on hand and +11/+6 for the off hand. with improved two weapon fighting, you get an extra attack with the the off hand weapon at a -5. so do I get all 5 attacks in one turn or do i only get 3 or what?
and just for reference, we are playing d20 modern set in the fallout universe, and I am using a ripper (3d6+6) and an unarmed attack for the off hand. I have taken combat martial arts so that unarmed attacks do lethal damage right?