Deathblow

Is a Craft Option that is available at Helms and all Types of Weapons. You can craft it or drop it.
Here is a table with the craft options (Blade, Katana , Orb , Crystal) :
Craft Type (+?) 	Critical Damage Craft (?%)	Critical Rate Craft (?%)
+0 	6 % Critical Damage 	3 % Critical Rate
+0 	7 % Critical Damage 	4 % Critical Rate
+2 	10 % Critical Damage 	5 % Critical Rate
+3 ( best craft )	16 % Critical Damage 	8 % Critical Rate
Their is also a 18% Critical Damage/9% Critical Rate one but that is only drop able.
Here is a table with the craft options (Daikatana, Great Sword) :
Craft Type (+?) 	Critical Damage Craft (?%)	Critical Rate Craft (?%)
+0 	12 % Critical Damage 	6 % Critical Rate
+0 	14 % Critical Damage 	8 % Critical Rate
+2 	20 % Critical Damage 	10 % Critical Rate
+3 ( best craft )	32 % Critical Damage 	16 % Critical Rate
Their is also a 36% Critical Damage/18% Critical Rate one but that is only drop able.