My poorly thought suggested feats:
Feats :
Butcher : Increase damage against living being by 10% but lower your damage against machine by 10 %
Fresh meat : Increase your damage by 10% for each enemies killed with bladed weapon (Spear,machete,knife,and serrated or spiked gloves)
Mania : Increase attack and fortitude by 30% but render your character uncontrollable until the effect worn out (Your character will be taken over by the AI)
Shield mastery : your block increase by another 15%, now you be able to block bolts and bullet with your shield to reduce damage taken.
Stampede : Rush at your enemy with your spear, give mechanical damage and unbalanced debuff (Depend on movement point for range and strength for damage).cost mp instead of ap
Charge : Rush at your enemies and ramming them full speed, give mechanical damage and chances to get either unbalanced or dazed debuff. Depend on cons and str. Cost MP instead of ap
Just some thought i give. Not really good feats probably XD