Aye, but there COULD be adventure:

Space exploration. Say... something from Interstellar. A wormhole appears, being powered artificially from the other side. A team of explorers, soldiers, and diplomats go through to find the mysterious beings who powered the said wormhole- and instead find a system filled with planets with relics of the civilization past. Searching through the different planets- perhaps ranging from jungly to deserty, from inhabited by defense 'bots to really dangerous creatures (that may or may not have been genetically engineered) in search of the advanced beings. 

It's likely that we'd have ships across the solar system by the time 2250 comes around, so sending a ship through wouldn't be too much of a project. 

It DID say scifi adventure, to be fair- this does look more like any other tech-versus-rawrs. This makes it a little more interesting, and less likely to be purely combat.

Of course, an uberweapon prolly wouldn't be allowed/accepted. 

My character has inspiration from Titanfall, so he'd be ideal for exploration, fast or slow. And when shit hits the fan, the starship in orbit could drop some goodies for him to get- just have to survive 'till it drops.