Platform:Windows 10
ISP:Spectrum
Type of Internet Connection:CATV
Internet Connection Speed:400 MBPS
Date & Time:Tested on Dec. 11th, 10:45:15 AM, 2025. But can occur at any time.
Frequency:Always
Character Name:Martel
Race:ElvaanM
World:Ragnarok
Main Job:PLD 99, Master Level 45
Support Job:RUN 58
Area and Coordinates:Tested on Apollyon NW, floor #4. But can occur in any sector with an NM, Temenos areas included. Position ?-?(Limbus areas do not report position to the player)
Party or Solo:Party, 2 members.
NPC Name:N/A
Monster Name:Totemic. But applies to any Limbus NM.
Steps:
1.Take action on the NM(in this case, Totemic) to get it to attack you.
2.Observe the damage values taken under various conditions. With or without Sentinel, PDT, DT, or with increased or reduced defense, or when blocking with a shield.
3. Note that the damage values either do not change at all(Sentinel, PDT, DT) or don't change by the correct amount(Shield blocks, Defense changes.)

While the issue with Invincible not working vs these NMs was patched, and remains resolved, there are many more issues remaining.
  • Sentinel does not reduce the damage taken from physical attacks by the NM. The player will take full damage through a fresh, relic enhanced, Sentinel.(PLD Relic feet boost sentinel's physical damage reduction to 100% for a while, so any physical damage being taken shortly after activation is a clear issue.)
  • PDT(Physical Damage Taken-) and DT(Damage Taken-) has no effect. No visible difference in dmg between wearing Burtgang(18% PDT that exceeds normal PDT cap, 68% reduction total) or not. Further, taking a hit naked(No PDT or DT) only increased dmg by a sub 100 value. If PDT/DT had been working it should have doubled, at least(not to mention the DEF/VIT changes from stripping all gear)
  • Shield blocks do not reduce damage by the correct amount. There is a damage difference. But it looks more like -60 flat damage than it does -60% damage.(Duban Stage 5 is normally a 60% reduction in damage on block.) Other shields/types were similarly ineffective.
  • Defense is weirdly ineffective. Being Aegis Schism'd down to 500~ def(from 2,300+), made no notable difference. There might have been a change, but if so it was sub 100 dmg. Likewise, increasing player defense to over 7,600+, and reducing monster attack only reduced damage taken by about 10~20 a hit, on a 500+ damage typical hit.