STR_DEF = how much STR have champ at start same for DEX, CON, SPR
speed_walk = how fast champ run
HP_UP = HP get per lvl same for MP_UP
HP_UP_PER_CON = i think its how much hp get for 1 stat of CON (heal)
MP_UP_PER_SPR = how much mp you get per 1 stat of SPR
STR_MELEEDAMAGE_RATIO = for every some STR points you get 1 point of damage for DEX (range dmg) SPR (magic dmg) same... what about level ratio... when you lvlup you get some points

Blockrate_max and guardrate_max i think you understood it
BLOCKDEX_FACTOR = for every 0.9 dex you get 1 block rate (i think)

same for guard factor
other i think you understood too
change size to 5 and you become gigant

at *** 0 = man 1 = woman