Razor 2: Hidden Skies tries gallantly to emulate the shmups of yore, but falls flat not for want of creativity (though it could certainly use a bit more), but inexcusable ♥♥♥♥-ups on the game mechanics themselves.
The game attempts, in some places, to be a bullet hell game but the hitbox of your ship is extremely large and does not even match the graphic - it awkwardly extends out an uncertain distance to both sides, but does not seem to include the nose of the fighter. Furthermore, the areas extend visually farther than your actual range of motion, but this is impossible to tell without running right into an invisible wall. In several areas, enemies park right on this wall, giving the illusion that you can zip around them to avoid fire and take them out, right up until you crash into them headlong making the attempt. This is made even more unweildly by the boss fights that zoom the camera out, supposedly to impress you with how big the boss is. Sadly the net result is that now you can see even more but have the same narrow movement lane, exacerbating the problem even more.
Two subweapons are heat-seeking with auto targetting, but there is no mechanic to choose what you'd like to target - the game seems to completely arbitrarily choose for you, and even if the lock-on happens to be a priority target, anything flying in the path of your slow-traveling relativistic missiles will intercept them and explode instead. (Which prompts the question of how does a missile travelling at relativistic speeds even work, and if it does why are they so bloody slow?) The bosses are all recycled variants of each other - fight three tanks, then fight three spinning satellite things, then... etc.
Unfortunately the problems do not stop there. Movement is imprecise and jerky. Combine this with the awkard hitboxes and you've committed a cardinal sin in the shmup genre - dodging is effectively impossible in places, though this doesn't matter a terrible lot since to cover for this the game slathers you in multiple shields which partially refresh upon each pick-up. Despite that fact, you still take a lot of hits simply because your hitbox isn't where you think it is, and it's nigh impossible to guage where its limits are precisely, since it extends well beyond the ship graphic. Unfortunately, the pickups themselves don't make a terrible lot of sense. One of the most common is Energy, which restores a pip on your Energy meter. Which is grand, only the game never quite explains what Energy is for or why you want it, despite being able to upgrade your ship batteries to have more of it. Oh well, free shields I guess!
In general the game is horridly unpolished. The translation is riddled with grammatical errors, word misuse, and typos (I'm not sure what a Gravity Riffle is). Each mission has a cheesy low-quality text-to-speech mission introduction voiceover, only it gets a few words into it before the explosions start and the rest is completely drowned out. Oops. Hope it wasn't important. Soon after starting the second mission, the primary fire input became stuck and I was essentially on autofire for the rest of the game. Which isn't all bad I suppose, except with the input stuck, I became unable to read mission briefings (not a tremendous loss since they're an exercise in bad English and misspelled words) and upon finishing and going to the main menu it would spam me right into a new game on Easy Mode, not allowing me to change settings or even exit the game. I had to alt-tab and manually kill it.
In short, I can't recommend this game at all, even to die-hard shmup fans, unless you seriously need a fix and simply cannot find something else to scratch the itch.