Changing killer to deadPlayer... names like that give a horrible impression or comprehension of what the function actually does.

If someone didn't know any better they'd think all that stuff happened to the player that KILLED the dead person, when infact this effects the dead player.
As we spot such stuff we should correct their "appearance", takes a few seconds to make things clearer.

L2_GameServer_T1/java/net/sf/l2j/gameserver/model/actor/instance/L2PcInstance.java

@@ -4631,26 +4631,25 @@ public final class L2PcInstance extends L2PlayableInstance
      * <li>Kill the L2PcInstance </li><BR><BR>
      *
      *
-     * @param i The HP decrease value
-     * @param attacker The L2Character who attacks
+     * @param deadPlayer - Player that has died.
      *
      *
 	 * @see net.sf.l2j.gameserver.model.actor.instance.L2PlayableInstance#doDie(net.sf.l2j.gameserver.model.L2Character)
 	 */
 	@Override
-	public boolean doDie(L2Character killer)
+	public boolean doDie(L2Character deadPlayer)
 	{
 		// Kill the L2PcInstance
-		if (!super.doDie(killer))
+		if (!super.doDie(deadPlayer))
 			return false;
 
-		if (killer != null)
+		if (deadPlayer != null)
 		{
 			L2PcInstance pk = null;
-			if (killer instanceof L2PcInstance)
-				pk = (L2PcInstance) killer;
+			if (deadPlayer instanceof L2PcInstance)
+				pk = (L2PcInstance) deadPlayer;
 
-			TvTEvent.onKill(killer, this);
+			TvTEvent.onKill(deadPlayer, this);
 
 			if (atEvent && pk != null)
 			{
@@ -4663,7 +4662,7 @@ public final class L2PcInstance extends L2PlayableInstance
 			// Issues drop of Cursed Weapon.
 			if (isCursedWeaponEquipped())
 			{
-				CursedWeaponsManager.getInstance().drop(_cursedWeaponEquippedId, killer);
+				CursedWeaponsManager.getInstance().drop(_cursedWeaponEquippedId, deadPlayer);
 			}
 			else if (isCombatFlagEquipped())
             {
@@ -4675,21 +4674,17 @@ public final class L2PcInstance extends L2PlayableInstance
 				if (pk == null || !pk.isCursedWeaponEquipped())
 				{
 					//if (getKarma() > 0)
-						onDieDropItem(killer);  // Check if any item should be dropped
+						onDieDropItem(deadPlayer);  // Check if any item should be dropped
 
 					if (!(isInsideZone(ZONE_PVP) && !isInsideZone(ZONE_SIEGE)))
 					{
-						boolean isKillerPc = (killer instanceof L2PcInstance);
-		                if (isKillerPc && ((L2PcInstance)killer).getClan() != null
-		                               && getClan() != null
-                                   && !isAcademyMember()
-                                   && !(((L2PcInstance)killer).isAcademyMember())
-		                               && _clan.isAtWarWith(((L2PcInstance) killer).getClanId())
-		                               && ((L2PcInstance)killer).getClan().isAtWarWith(_clan.getClanId()))
+						boolean isDeadPlayerPc = (deadPlayer instanceof L2PcInstance);
+		                if (isDeadPlayerPc && ((L2PcInstance)deadPlayer).getClan() != null && getClan() != null && !isAcademyMember() && !(((L2PcInstance)deadPlayer).isAcademyMember()) && _clan.isAtWarWith(((L2PcInstance) deadPlayer).getClanId()) && ((L2PcInstance)deadPlayer).getClan().isAtWarWith(_clan.getClanId()))
 		                {
 		                    if (getClan().getReputationScore() > 0) // when your reputation score is 0 or below, the other clan cannot acquire any reputation points
-		                		((L2PcInstance) killer).getClan().setReputationScore(((L2PcInstance) killer).getClan().getReputationScore()+2, true);
-		                    if (((L2PcInstance)killer).getClan().getReputationScore() > 0) // when the opposing sides reputation score is 0 or below, your clans reputation score does not decrease
+		                		((L2PcInstance) deadPlayer).getClan().setReputationScore(((L2PcInstance) deadPlayer).getClan().getReputationScore()+2, true);
+		                    
+		                    if (((L2PcInstance)deadPlayer).getClan().getReputationScore() > 0) // when the opposing sides reputation score is 0 or below, your clans reputation score does not decrease
 		                    	_clan.setReputationScore(_clan.getReputationScore()-2, true);
 		                }
 						if (Config.ALT_GAME_DELEVEL)
@@ -4738,7 +4733,7 @@ public final class L2PcInstance extends L2PlayableInstance
 			getParty().getDimensionalRift().getDeadMemberList().add(this);
 
 		// calculate death penalty buff
-		calculateDeathPenaltyBuffLevel(killer);
+		calculateDeathPenaltyBuffLevel(deadPlayer);
 
 		stopRentPet();
 		stopWaterTask();