Easy capture the flag
In campaign mode on the sixth or seventh level, there is a capture the flag game. If you go directly right from your base, you will go over some mountains then see a stone structure. Go to it. Once there, you will find a laser rifle. From where you found the laser rifle, move down towards the enemy base. Go to the hills to the right of the base. You will have a very good perspective of the base. They might catch you and start going after you -- ski down the hill and use your get at the end of the hill. Go to the tower to steal their flag. Also, change your weapon when they find you (the laser rifle is poor at close range). Get to your base as soon as possible and score 2 points. You can do this repeatedly until time runs out.

Onslaught
On the Onslaught mission, the best strategy for surviving the Derm Forces is to simply repair the generator, then repair the two turrets. One is on a hill and another is up towards the roof opening. After that is accomplished, go up to the roof opening where the flag is located in the capture the flag games, Then, go to the nearest Inventory Station and select Medium Armor. Select your pack as Remote Turret. Deploy two turrets on each end of the turret side of the base and deploy a few more where each opening to the basement is located (near each of the Inventory Stations). Then, hide and let your Mortar Turrets (you should have switched them at the beginning) and Remote Turrets do all the work. After the first wave is over, switch to the Heavy Armor (Juggernaut Armor) with a Shield Pack (activate it frequently).

Satchel charges
On the first deathmatch, get to the tower. There will be satchel charges that you can plant.

Quick ammunition
If you are in need of ammunition and do not have an ammo pack (but for example have an energy pack), on some maps there are bunkers with packs in them. If you do not have an ammo pack and there is one on the ground, swap for whatever pack you have to get instant ammunition. You can do this back and forth as many times as needed.

Picking off enemies
There are many floating patches of land that are some times useful to pick off enemies. Some of the soldiers will see you before they get killed and start shooting underneath you. If this happens, jump off, spin, and while in the air, shoot him.

Run over enemy for fast kills
Set the map to be a capture the flag level and make sure it has flat land, but a long stretch between the bases. There can be mountains, but make sure the path back and forth is just flat land. A good example would be Katabatik (a snow level). Get your vehicle to a fighter and set it to third person vehicle under the player menu during game play. This allows you to see where you are driving a lot more than in a first person vehicle. Drive around in the air between the bases, but stay away from the enemy bases. They will more than likely have a heat seeking turret waiting for you. When an enemy approaches your base, fly down and hit him from above, from in front, from behind, or from the sides. It will instantly kill him if done correctly. It can sometimes be difficult, but will be easy most of the time.

Single player Botmatch survival and fighting tips
Use the following tactics to stay alive longer in a battle and get a good number of kills and points before you die. Always set your Inventory to Medium Armor and guns to Spinfusor, Chaingun, Missile Launcher, and the Blaster. Save the Blaster for last -- since it runs on jetpack fuel, you have unlimited ammunition for it. Next, set your Pack to Repair Kit. When injured badly, hide in a mountain pit on the sides and use this to regain energy, then continue your assault. It also makes for healing your Base Turrets and Sensors. Set your Grenades to Flares (in case Heat Seeking Missiles target you or a fellow teammate. Set your Vehicle to Fighter, since it has agility, powerful Twin Heavy Blasters, and is easy to control. Now that you are set up for battle, get to an Inventory Station. Get equipped, then get to the Vehicle Station and hop into your Fighter. You are ready for combat. Use the following tricks for a better chance of a successful assault. Use your Fighter to fly over there, shooting at any enemy target that you see. Get to their base, and if a Heat Seeker starts to lock on to you, quickly land your jet somewhere safe. Get to the top of a mountain where you have a good view on their base and they can see you. Stealth is always the key to survival. Do not blow your cover. Stand there, use your lock on, and shoot at targets. To increase your chances, locate their main Sensors and Base Turrets and destroy them. If there is no one in your way and you are feeling lucky, try to make a run for their base. Get in there and take out their generators to slow them down a lot more. Then, get back to your hideout, making sure no one is following or watching you. The AI opponents will not remember where you respawn. If you are playing online, get in your fighter and break back for the base, because you will survive too much longer.

Secret Chat test:
Ok people here is a good way to improve communication between you and your friends online! If you want to talk to other people using a variety of preset command sentences, go to your buddy list after you create a player and enter CHAT-TEST (spelled out just as seen). This cheat will work in rooms that are marked inevitable with an arrow pointing to them.

Secret statue
Start a one player bot match. Set "Bots" to "Off" and "Max Team" to "1". Choose the Slapdash level under the CTF heading. Go to the vehicle station and get yourself a jet (easier to see). Follow the perimeter of the level (next to the out of bounds wall) until you reach a clearing in the top right corner. Get out and look in the area to find a statue.

Turrets and armor
The following turrets are best against the corresponding armors:

Missile Turret: Light and Medium armor.
Plasma Turret: Devastating to Heavy Armor as well as Light and Medium.
Mortar Turret: Heavy armor.
Anti-Aircraft Turret: All armors.
Sentry Turret: Note: You cannot deploy it. The Sentry Turret destroy anything and is best avoided