Since that was discussed in the previous page, Dreamcast could handle a fine Metroid Prime-like imo. Far from the GC's, but still not bad, with the right art style. Less like Half-Life (lol, Idk why that's the proposed comparison), more like Maken X, ideally with equal polish on all the environments, enemies, animations, effects etc., as some are way better than others. It could of course look even better targeting 30fps and ditching some of its larger environments, whatever worked to keep it more consistent and polished than Maken X, especially texture wise as it's at times almost N64-like (maybe at all times but some environments just look way better so they could have less garish and muddy texturing than it appears in some spots but not others, with better art design (or I guess higher budget, which they lacked, evident in the static image cut scenes vs the proper in engine ones).
Skim from the timestamp to 25:10+ for examples of areas and effects in a single level (major end game spoilers if you intend to play it). The engine handles multiple enemies in large areas great and even has some similarities in gameplay, especially with having attacks you have to side dodge, jump over (or even over the enemy/boss to get behind it) while locked on and what not, even if it's mostly melee based with some projectile attacks for some of the forms you can take on. The game's engine shows a ton of promise in visuals and other areas, it's just hard to find decent footage.
The player in the video sucks too, it's not the deepest game but you can do a little better controls wise, like dash sideways to dodge and there are some contextual actions like a strong counter move after a successful block (done by just moving backwards which like dodging he also barely does), basic combos etc., it's a bit more fluid and cooler than shown, though the turning speed is definitely lower than it could have been (Metroid Prime also had that issue of course, to a lesser extent). The engine also supports effects like heat haze and fake reflections and specular-like shines and other stuff, including Half-Life-esque lightmaps (maybe it's faked in some other method but there are areas you activate light switches in which brightens/colors them and the darkness also has some kind of fog on top to limit visibility more than just the brightness being turned down) and cool in-engine cut scenes (maybe those aren't 60fps, not sure). Some environments are way bigger than any Prime-like would need, there are progression triggers and all sorts of things. It's an inconsistent and weird game but does most of what FPS or Metroid-Prime-likes need way better than Half-Life's port.
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