See the (in the zip) included rulesheet "swords of fury_rules.txt" written by B. Elmore for a detailed descripton of the rules.

From the Score Card:
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                             Williams Swords of Fury
*5 Magic Drop Targets, when made, score lit value from 50K to 250K; advance LIONMAN Bonus, and advance Multiplier.
*A-V-E-N-G-E-R scores lit value from 50K to EXTRA BALL and lights LIONMAN Bonus.
*Center Ramp advances LIONMAN Bonus, and when lit,         scores 100K to 1 Million.
*OGRES ALLEY advances or collects values from 20K to         500K. 2 bottom outside lanes score OGRES ALLEY values,      as lit.
*Making Multiplier can lite SPECIAL in Magic Target area.
*Two bottom return "star" lanes light next letter in "AVENGER",
and start flashing Magic Tunnel.
*Multi-Ball play scores X2 or 3X, as indicated on playfield; lights
LIONMAN Bonus and lights a single lamp in Magic Target        area for JACKPOT.
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