Complex sentence: In addition to Raithwall's crypt, the tomb contains priceless royal treasure, and only those with proof of direct lineage are suffered within: intruders are met with traps and guardians most terrible.
Split into simpler sentences: In addition to Raithwall's crypt, the tomb contains priceless royal treasure, and only those with proof of direct lineage are suffered within. Intruders are met with traps and guardians most terrible.