Maybe, you could add the option of "throwing" anyhing, such in other RL? It could be barred from Angel of Berserk and Angel of Pacifism, but could make in new "challenge" -
Angel of Buffonade
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Now you are not just a UAC marine with affinity to juggling , but a real juggler, right from the circus - and YOU are the only thing , that can destroy evil,lurking below(or die trying) - you can't fire weapons at all(if you try to - they explode), but you can throw absolutely anything at your foe, and you are a bit better with it, than others( shouldn't be too much)
Well, any thrown ammo should have quite short range of throwing, and possibility of detonating(depends of type) - 10mm should have low, rockets should have higher ( and by the way, why barrels do explode and rockets - never....only cause "it was so in Doom?"...)