a straight forward build for a biological (for me):
put all stat points in strength
put your ability points on the passive skills first to increase defense
and the equips is up to you if you want to boost you strength or to increase you vitality
also allocate points to acquire the predator ang toxicant forms
for the zombies: there is a hidden area wher you find th best LASER weapons. use the gauss thing and the laser canon to fight the zombies.
the hidden area is somewhere above in a certain level.
cool glitch: while fighting the last boss, use power of voltaggia, and the change sword, urami will remain above while you are on the ground. use smg, hold S and click at chat box... straight stream of bullets... XD