Free Ammo On the starship phoenix, do to any holographic training, when you enter the training, immediately leave it, your ammo will be full Inferno Mode / Rift Crossover in Arena Challenges Once you finish an arena challenge at Annihilation Nation, if there is an Inferno Mode crate laying around, you can trigger it after you win the challenge, and you will still have the effect in the next challenge. The same thing happens with the Rift Inducer/Rift Ripper's votrexes; if you shoot some after the challenge is over (but before the screen goes black) they will still be there when the next challenge starts. This is a good way to do some damage without having to use any ammo, and doing this with an Inferno crate can make single-weapon challenges much easier; as long as you don't try to fire your weapon, you can do them entirely with the wrench. (This does not seem to work with the Suck Cannon/Vortex Cannon challenge; when I tried it, I got a "Out of enemies to use for ammo" message and lost in Round 2.) Wall Hacking Allows you to pass through any wall, forcefield, etc. You need the megaturret (miniturret works too but megaturrets work much better). Place yourself against the wall facing the opposite of it and place very closely 1 to your left and 1 to your right. If done correctly, the screen will start to shake. Now place a megaturrent infront of you very closely and you will either have gone through the wall or the screen is violently shaking. If it is shaking then try to move through the wall by running or charge boots.