Starting a new campaign, setting, genre. I could use some major help!

[tshiggins]

Okay, let's back up, here, a bit. If you jump in to the details of the gear, without any framework, you'll have no criteria by which to start making decisions about how to get to the campaign you want.

Firstly, remember that GURPS skews toward the realistic, in most situations. Based on what I saw in that video, the word "realistic" doesn't belong in the same room as the write-up you do for a campaign that emulates that setting. You could probably create the opponents of "Purple Hair Protagonist" (PHP) with Ultra-Tech and/or Transhuman Space, but there's no way PHP fits into a realistic sci-fi setting. He's a superhero in a sci-fi setting, and that's all there is to that.

So, it looks like the gear mostly fits in with GURPS TL 10 -- battle-suit exoskeletons with integrated Command-and-Control hardware (HUDS, communications, mature "Future Force Warrior" systems, etc.) and big honkin-guns. The air-craft and the scorpion robot could come straight out of "Reign of Steel." (The cannon in its tail could be a TL10 Blaster Cannon, Ultra-Tech, p. 123. Everything else could easily be TL 10 high-powered lasers and missiles of various sizes.)

However, PHP guy does stuff that no battle-suit could protect someone against. He's got Enhanced Time Sense (Basic p. 52) and huge amounts of Super Jump (Basic p. 89), at the least, as well as a personal force-field that nobody else does, a high strength stat, and melee weapon that has a crap-ton of armor divisors. He's basically a fast combat brick with blasters and a fancy sword. That all says "Supers," to me.

So, basically, your campaign setting is, "Superheroes in a TL10 world" -- which describes a lot of anime, pretty well, actually.

(Alternatively, PHP could be a cyborg with TL 11 super-science against TL 10 straight-science mooks, but that could be even tougher to explain....)

At this point, you can start your campaign design. Why do supers exist, in this world? Where do they come from? What are their practical limits (character-point budget)? What sorts of powers do they have? Are they all variations on a theme (which may imply a "design" of some sort, and thus a "designer"), or are they as varied as the characters in Marvel or DC? How long have they been around? How long have regular humans known about them? How do regular people react to the presence of such beings?

The answers to those questions force you to flesh out the rest of the world. You'll probably have a wide variety of attitudes about the supers, based on the societies in which they're found. Since you're new to this sort of thing, you may want to base the campaign on Earth, about 150 years (or so) in the future, and put together a timeline of how you think things will go. Figure out when the supers show up (and why), and determine how they impact the future.

At that point, you have a solid framework, and you can start making decisions about gear that fits with your setting. You'll know what's available and what isn't, and most importantly you'll know why. That, in turn, helps you map out the types of characters you want to see, and that guides your players.

Once you've gone through that process, you'll have a much better handle on how things are supposed to work, because you've already looked into them as part of the decisions you had to make. After that, it's a matter of running a few combats, in some "dry run" scenarios, until you and your players get a handle on how sci-fi combat works -- and what you have to do tweak it to make it less realistic, so you can have the sort of action seen in that video.

(Hint: In realistic future military combat, anything that gets spotted pretty much dies instantly, at ranges measured in miles. If you want the sort of melee combat seen in most anime -- including the type portrayed in the example video -- you need to dial the "realism" level way, way down. That's why I thought of supers.)