The Ice Breaker catalyst is designed to be acquired after obtaining the Ice Breaker sniper rifle. If you complete the catalyst quest before acquiring the weapon, the game may register the catalyst as unlocked in your Collections but fail to apply it to the weapon once obtained. This mismatch can prevent the catalyst from appearing or being usable on your Ice Breaker. Potential Workaround: Some players have found success by re-running the Vesper's Host dungeon and completing the catalyst puzzle again after obtaining the Ice Breaker. This process involves: Destroying the four Stasis crystals located throughout the dungeon using the Ice Breaker. Collecting the datapads revealed by each destroyed crystal to obtain a sequence of numbers. Entering the collected code into the secret room's panels using the Operator Augment. Opening the chest that appears upon successful code entry. Completing these steps has, in some cases, prompted the game to recognize the catalyst properly and apply it to the weapon.