Suggestion:
Give catalyzer bullets the ability to pass through any type of shielding and be able to charge the targeted enemy as long as it comes in contact with that target. This change would also affect ld if it were to happen.
Reason:
It is too annoying to attach a charge catalyzer bullet on an enemy that has the ability to shield. Having to find a way to get around the shield and be able to charge the target makes the gun not worthwhile and the gun will have less player usage later on in Sk's lifespan.
Catalyzer is crap and underused but it has little to do with the very few monster that use shields.
Gremlins have shield on their backs, but they attack you head-on instead of using their butts so don't count those.