I am a fan of the radical adept even though they are not combat heavy.
Take "Thy Name I Keep" background from the radical handbook on page 37 to get the Boon of Leech Life Force from the Dark Pact of Survival. All damage you deal to wounds heals you or grants additional temporary wounds.
Take the Malefic Scholar alternative career path also found in the radical handbook on page 50 to pick up sorcery.
Pick up the sorcery power "Living Weapon" for +20 WS, +20 S, +10 T, +10 Ag. Stack on Hammerhand or Molten Man as other suggested above.
There are also the transgenic grafting on page 203 of the radical book that lets you pick up traits and talents from alien species. Go for claws to get natural weapons.
Living Weapon is a nice substitute for not having access to cheap WS characteristic increases. Also the class is very good with out of combat actions, and sorcery will allow for unrestricted access to psy powers.