Lance, the Undead Mage, teaches you online how to properly use a nemesis.
For Lance's nemesis... it's somewhat tragic, failing to kill Lance while alive, and after death, facing the risk of being summoned from Hell by Lance to be used up as a "battle companion".
It's somewhat unwise to be the enemy of an apprentice Grim Reaper who has signed a contract with Hell.
Death God Solomon mourns for Lance's nemesis for a second.
Lance is his partner, he and Lance are in cahoots; he ought to protect Lance and that means protecting Lance.
Having collaborated for nearly a thousand years, why would he protect Lance's nemesis instead of Lance?
If Lance's nemesis could kill Lance... then he would be quite willing to support Lance's nemesis.