Had an old thread on this.
https://omni.insanelabs.net/showthread.php?t=14761 Here's what I can copy/paste:
Me
Press reverse + opposite turn while cruising forward in mino for a sharper turn
Lagzilla
Learn where the mino hurts itself with its primary gun.
Make sure when gunning you are looking AWAY from the main gun. The driver will worry about what is in range of his main weapon. I am always worried about whats coming up from the sides or behind...
Dimshade
You can raise/lower the nose of scorpions (and variants), badgers, benders, and several other light vehicles on most maps by using your jump/crouch buttons. It's always amazed me that many, perhaps even most, players don't realize this and have their vehicles go cartwheeling away after taking a jump or fall.
Binger
I recently discovered that the alt-fire on the Cicada can shoot around corners. Press alt-fire on your target then hold as you back around a corner. I haven't tested it to see how far I can push it. Like will it go around more than one corner?
Smoker
Manta's and Hoverboards bounce twice as high when you first get on them and jump.
Turbo K
If you're fighting someone around a shielded node, go inside and use the link beam on them. It will go through the shield, but their hitscan weapons will not.
Pi
* mino gunners cant shoot someone on foot directly next to the tank & crouched, get in close and flak
* if an opposing player is at a locked node and it needs building, build the effing node- it's more useful to get the node up since you can then spawn in indefinitely and fight them (if nothing else)
* many 'good' players will have their mouse sensitivity fairly low, this helps with aiming but makes doing a 180 turn more difficult. if you can make a them turn around (several times) you'll level the field a bit
* goliath's are slower than being on foot. if you need to get to a node and have the option between getting in a tank and going on foot then go on foot.
* shield. it's a weapon that almost no ONS players use. when you think someone else has the advantage and is around a corner use it- it's demoralizing to the other person to know that their shots are ineffective and confusing to a good chunk of players. Shield's up, as soon as they finish taking the 2nd or 3rd shot put it down and start the fight
* when you're attacking be aggressive- even if you have 10hp and they're in a tank it's makes up for a lot simply charging them guns blazing. They can easily think you're better or more hp'ed than you are.
* when you're retreating don't be obvious. running away in a straight line to the health pack is kind of predictable. consider running away for only a bit until you're around a corner then see the above bullet point.
* be unpredictable, when you're fighting someone think to yourself 'what do they think ill do'. don't do that. running from 'good' players and running to 'bad' players... very predictable. this is a game of chess, sometimes very fast chess, sometimes very slow- still the same game. get in their head.
Sarge
You can kill the mega badger on foot using your shock rifle's secondary fire aimed at the turret (and lesser badgers too). The shock ball teeters the badger back preventing the gunner from firing at you. Also as most of you know, firing a vehicle canon at the turret has the same effect.
Dimshade
Be careful where you shoot with the ion if you're low on health. If you fire an ion blast and die as it is expanding, it becomes "neutral", and will kill friends and foes alike.
Similarly, if you call an air strike and die before the bombs drop, it will also kill your team mates. The same goes for the ion painter and I'm guessing the storm caster (though I have not tested this).
For l33t see-through-the-fog hacks, turn your view and look with the corner or side of your screen. Using the terrain and geometry of the map, you should have a general idea of where to fire. Care should be taken if you're using a vehicle like the mino or ballista that have very slow-turning main weapons. In many cases, such as when using a railgun tank, it's more about seeing what's coming and being prepared to fire rather than hitting them before they come into view when directly facing them.
Lagzilla
Also, if have no gunner, you can change into a gunner seat and see sideways without moving the main gun. Useful for aiming, as in Block Fort. Grab the fire tank, go down one level towards the middle. Aim at the node with the 2nd seat, once you hit it change back to the main gun. Don't move! If you don't move it will aim the gun at what you were firing at in the 2nd seat.
Termi
On Tanks A Lot, I like to jump on enemy tanks when given the opportunity and attack them by shooting primary flak. When you land on the turret of an enemy tank, they can't hit you without shooting a nearby wall which inflicts damage upon themselves. Also, the minigun turret won't be able to hit you so the enemy tank is pretty much defenseless.
Bio tank, bio hound, bio badger, bio rifle DOES NOT do the extra damage to stock Leviathan.
Me
Having miniguns selected in a hammerhead allows you to look straight down while flying, unlike main cannons. Helpful for scouting enemy area (looking for nuke tank). Just fly as high as possible on the map and then enjoy birdseye view. You'll be enough into the ceiling fog on Junkyard where a lot of people won't even notice you.
Enyo
Speaking of hammerheads, it's handy to know you can fire an artillery round, switch to miniguns and immediately start firing them. I do it all the time if dog fighting another hammerhead... shoot them one time with the artillery and switch to miniguns and start spraying right away. Takes them out pretty quick and usually seems to make them start panic firing their artillery.
Hammerhead miniguns are also a better way to attack a dragon, but you gotta fly right up on top of the dragon and stay on top of it. They usually start trying to fly backwards to get a shot on you, but if you keep moving forward and stay literally right on top of it, it can't get away and shoot you while you keep hammering with the guns.
Fuzzy, to make the hammerhead go really off kilter with the shock rifle you have to hit the nose, or more specifically a little left or right of the nose where the little front wings are (you know, the feature that makes them hammerheads). I usually switch back and forth, left to right on the shot, seems to make it rock back and forth more. With practice you can time your movements with well placed shots to avoid getting run over by a frustrated pilot that can't shoot you.
Me
Console command "togglefullscreen" will let you play the game in a window.