Hello, since the Renegades expansion, I have noticed consistent difficulty and, in some cases, a complete inability to stun Barrier Champions, even when using weapons and effects that should work correctly. I have performed many tests and combinations. Below are some specific examples. Mataiodoxía Only about 1 out of 20 times, a single Arcane Needle successfully stuns the champion. 8 out of 10 times, 2 Arcane Needles are required to stun the champion. 2 out of 10 times, all 3 Arcane Needles are required to both stun and suspend the champion. Using an Arcane Needle to become Radiant does not allow weapons to stun the Barrier Champion. Wish-Ender Completely ineffective against Barrier Champions. Arbalest Only effective with precision hits. Revision Zero 100% effective in sniper mode. In standard mode, rarely effective and only with precision hits. In standard mode, often completely ineffective. Eriana’s Vow Effective only after 3 or more consecutive precision hits; otherwise, the champion appears immune. Praxic Blade Fully effective. Sniper Rifles Effective only with precision hits; sometimes multiple consecutive precision hits are required. Additional notes Deterministic Chaos and The Lament: not yet tested. Hand Cannons: completely ineffective. Being Radiant does not appear to help in any way. Tracking projectiles: not tested. Overall, this behavior feels highly inconsistent and does not align with the expected Barrier Champion stun mechanics. Thank you for your time. [spoiler]Moderator edit: This thread has been moved to the #Help forum where you can find answers and troubleshoot any Destiny in-game/bungie.net/companion app issues, courtesy of other helpful players and Mentors. Feel free to private message the moderator who moved your post, link to topic, for further clarification about why this topic was moved.[/spoiler]