NationStates

There was improbably hyperprofficient orbital aiming skills (e.g. Mars, through the belt, and then the final "boosted" trip) where we might well have had automated or HUD-augmented opportunities to add to this super-astronaut's instinctual skill (and, remember, he had some years of warzone experience to eat into his time at becoming that uber-astronaut?) to allow the necessary lateral thruster corrections to any of these journeys, though I don't believe he had much scope for that for the example when he just had his suit and the deck-plate. You can add similar plot-armour for the little ballistic trip on the Moon, too, with nothing other than luck allowing him a safe landing.

Gravitational effects was another huge bugbear, for me. No apparent effort made to make the Moonbase people lope under 0.166g (looked like the whole old "there's an Earth atmosphere, there's an Earth gravity" thing was just used without thinking too much about it). Mars, ditto, at 0.376ish. Numerous cases where zero-g scenes just had too much clues (clothing, and tears from an eye at one point) that they weren't. I wonder if that was the excuse, though, for the bit where Mars gravity plus acceleration seemed to be no trouble at all? (It was soon after, though, that a separate phase of acceleration was made a plot-point problem!)

Loads of other little niggles. Including a quick (flashback) bit where I'm sure that someone shown with strong wind atmospherically blowing through their air was standing in front of forest of wind turbines that were not spinning. Maybe they were just shut/feathered down (their load not required, or even protecting against overspin from the gale) but it jarred.

As did the "you're going to try to destroy <censored> with a <censored> and that's going to make the unstable <censored#1> safe???" plan. Apparently it did, and stopped the thing that we are told near the start somehow increases with power as it gets further from the source. (Focussed? Apparently not, if it's not deliberate. Maybe something akin to flavour-flipping neutrinos? But still apparently aimed at Earth, with Mars chancing to be in/near the path.) Largely a Mcguffin Threat, though, in many ways.

That said, I liked much of the ship design. Plausible, give or take wriggleroom for future developments. (Not including the "let's just arbitrarily stop off half way" thing. No, just no. Not even because it's a Rule Of Spacefaring that you do. It was a silly stop at a silly reason to have a place to stop at. Unless they had a rather compulsive backstory to that which they then had to cut.)

The thing I liked a lot was the Siri-esque psych-evaluation process. Feasible (if, it seems, normally easily satisfied by a hard-nose astronaut with good pulse control) to have applied machine-learning to the process of automating the process that doubtless every space-goer (of note, but there being many of them in this universe!) has to go through, and creating a level playing field.

...I'm convinced that after some inderterminate point (one of many such potential points), everything that happens to our hero is actually a fast-paced hypoxic death-dream they fall into due to not successfully getting through one or other critical situation.