EDIT: An update now that I'm roughly halfway through the game, at least by achievement progress. There is no Steam Cloud, so I had to play through the first world twice, but it's not a big deal. Depending on how good or bad you are with this game (moving and dodging is your friend), you can probably beat the game in an hour or so, and with only 6 achievements (only one of which is secret), it's not too difficult to 100% achievements for this game if you care about that sort of thing. It feels easier to me with the mouse than it was with the other control schemes, though obviously YMMV.
Just a VERY quick review to give you an idea of what to expect. I have previously played the game a little bit on the 3DS and tried the game on a friend's Switch, but my total playtime across all three ports is likely just over an hour, so keep that in mind.
The game runs perfectly fine on the PC, which should be rather unsurprising considering it has been on the Wii, 3DS, and Switch. Don't expect much in the way of options. In terms of graphics, you get to change resolution, FPS cap, and whether it's in a window or fullscreen, and that's it. It does indeed support 4K and 144 FPS (I imagine higher is possible, but my two monitors cap out at these limits, respectively). You have some other options for sound and music volume, aim sensitivity, and aim type (normal vs simplified). As far as I can tell, there doesn't seem to be a way to change controls, with the "Test Control" option just simply showing you what the controls are and letting you test them in a gallery shooting level of sorts.
I'd also like to mention here that I experienced two major bugs so far: the mouse does not work at all in fullscreen mode. It works fine in both windowed and borderless windowed mode though, so probably not a big deal. However, the second issue I noticed is that windowed mode doesn't appear to work on my multimonitor setup but works fine on a single monitor setup. I think the second issue is probably just a temporary error though.
Relatively minor issues aside, this game itself is...fine I guess. It's an on-the-rail shooter with a couple of characters. You get to move side to side, but otherwise you'll be just forced to move ahead once you kill enough enemies, which you'll be doing by aiming the mouse. You can switch weapons and have grenades (at least with the first character, haven't tried the others). The game starts out pretty easy, but gets decently difficult quickly, so be prepared.
Don't expect anything fancy. The graphics look sharper and runs at higher FPS than any previous version, but I imagine you can obviously see from just screenshots that this isn't going to be a graphically intensive game of any sort. It's also a fairly simple game overall, but probably decent enough for the cheap price.
Only other thing I think I'd cover is which version you might want to buy. For reference, the 3DS version is, I think $8 and the Switch version is $8.99 (I may have those switched). That would make those games cheaper than the full price of the PC version, but the launch discount makes it slightly cheaper. Worth noting though that the game is also on iOS, where it costs $5 and also has a lite/demo version that you can try if you want to get a sense of the game (though with touch controls).
I'm personally of the opinion that the iOS or 3DS version is probably the best version to get since they're both portable and use control schemes (touch for iOS and stylus for 3DS) that are more than good enough. Graphics may suck for 3DS, but it's not THAT bad, especially for a game like this. I wouldn't get it on the Switch though, as the Switch uses controller only inputs without any motion controls that the Switch CAN support (and what the original game on the Wii had), and controller play (which you can also do on the PC) will make it a lot slower for you to aim at all the enemies.
Summary: if you want to get the PC version, it's likely the best looking in terms of graphics. It plays well enough with the mouse, and the few minor bugs are not really a huge deal. The music in the game is actually quite nice for something this cheap, and the game is a good "break" game to play for a bit here and there, as the game does have autosave. For the price it currently is, I'd say it's an ok pickup, so I'd recommend it if you just want something to play inbetween larger games.
