Since this is based on the mature VM engine, this is HuC. When I do shooters, it's pceas only. Reason being is that it is much more effective to implement finite state machines in HuC than it is in assembly, so HuC is much better for platformers (and any other games requiring FSMs, like fighting games), but shooters do not require FSMs, and performance is the #1 issue in shooters, so assembly is required.