Hopefully this guide will be insightful.

The key thing to staying alive to the bitter end in REVO is to keep moving!!
If you are not moving you are dead. Don't stop for more than a split second at a time. You have to move around if you are going to dodge bullet hell. Second to that for the most part enemies don't damage you when you pass through them, so take full advantage of that!

Ammo is a limited resource so any time you can conserve it, it is best to do so. Practice being efficient with your ammo consumption. Although on Normal mode you might not have to worry about ammo as much, on Hard mode you definitely do, and being conservative with it will pay off. Don't get in the habit of spraying ammo in every direction like it's limitless because when you do play in Hard Mode later you will find yourself trying to break out of that habit and it will be hard change after you have become accustomed to it.

Killing smaller enemies first can save your life when bigger enemies are around. if you focus too much on the big guys you can lose track of what the little guys are doing, so doing a quick sweep of the smaller stuff is a very good idea in some situations.

Asteroids can be extremely dangerous to you if you break them while close by. On the other hand when they break they give you a large burst of Tech Points which are very useful to get lives back, So I do recommend breaking them all and taking full advantage of them whenever you can because they can keep your stock of ships right up at 3 in the more crucial parts of the game when you need those extra ships. Sometimes enemies will appear on top of asteroids which can be very problematic if you try to attack them and blow up the asteroid in the process. Something like this can destroy you at point blank when it bursts. So it's best to try and sweep up that asteroids from afar before moving in for the kill on those other enemies. Sometimes the asteroid itself will blow up and destroy enemies in it's wake as well. Abuse the hell out of that. It's very powerful using asteroids to kill things for you. Just be careful because they are dangerous.

Mines are also useful weapons. There is a boss that is surrounded in mines and if you trigger them the right way you could blow up mounted guns and lasers very effectively even when the turrets are closed (shielded) the mines do a great job of destroying them. It does come down to guess work and timing sometimes, but the mines do come in handy. Why do we even care though? Multipliers and score. In REVO When you have your multipliers cranked up really high and you make it to the boss, you have as much time as you need to kill the boss which also means you have as much time as you want to kill all of the turrets it has for extra points. I have used this strategy to bolster my score and beat my own personal bests on some stages.

The disc shaped enemies with two horns on top that you must hit to deal damage are best killed using the "Diamonds Maneuver" (Shown to the left) This move made popular by D14M0ND5[twitch.tv], requires you to fly straight in between the horns and blast your sideways guns into both horns at the same time. While pulling this off it is best to make sure there are no other enemies that can shoot at you in the meantime because this does require you to stop in one place for a moment, which as mentioned earlier is not a good way to stay alive in most cases.

Why use 1 forward gun if you can use 2 at once? Your Sniper shots pack a punch especially the advanced version! Take advantage of this while firing your forward burst guns at the same time. 2 guns at once will spray a ton of damage in a forward direction.

Personal advice for when you get stuck; Analyze why you are stuck, what are you doing wrong, what can you do differently. Try new tactics and see if you can press on. Sometimes dodging gunfire and avoiding enemies all together can be better than attacking them straight on. When I get stuck in REVO I go back to Stage 1 and play back up to the stage I am stuck on and sometimes this helps me press through. All of this aside maybe just try different guns. Find what works best for you.

I am not going to spoil how to gain multipliers in this tutorial, but just know that you can and once you figure out how to actively increase them this becomes a whole new game with different strategies and complications.

Remember: Stay moving, stay alive!

Enjoy! -PEves-[twitch.tv]