Unlockable: Compression ChamberSimply play 4 local games.
Unlock More HuntersUnlock new hunters (characters) on wi-fi mode by killing them in campaign.
Unlockable: Compression Chamber You must play 4 local games
Unlockable: Council ChamberYou must play 16 local games.
Unlockable: Gateway ArenasYou must Land on a new level in single player.
Unlockable: Head ShotYou must play a four-player match.
Unlockable: Incubation VaultYou must play 6 local games.
Unlockable: HarvesterYou must play 12 local games.
Unlockable: Fuel StackYou must play 20 local games.
Unlockable: Fault Line You must play 22 local games.
Unlockable: Elder PassageYou must play 18 local games.
Unlockable: OublietteYou must defeat the second form of the final boss.
Unlockable: Outer ReachYou must play 10 local games.
Unlockable: SubterraneanYou must play 8 local games.
Unlockable: Arena Subterranean You must play 8 local games.
Unlockable: Gold MedalGet 200 total wins.
Hint: Morph JumpTurn into a ball then lay down a bomb. You have to be quick. As soon as the bomb explodes turn back into normal mode and jump and you will go higher than normal.
Hint - Ripping Cretaphid's Eyes Out With A Splenda-BlenderOne of the best ways to take down Cretaphid is to obtain the magmul weapon. With the magmul armed and ready you stand a great chance of victory. If used properly, can take out two or three eyes at once. Just aim at the center of a group of blue eyes. They must be pretty close to each other for magmul to work its magic. Use your missile launcher to take out the crystal as it is easist to aim with.
Hint - Stage BouncingIf you are stuck at Slench 2A or any boss past that and keep running out of ammo or life, then just skip it and go to Celestial Archives. Yes you can do that and while you beat the archives stage, be sure to pick up four UA Expansions (that's 120 extra shots), 1 energy tank and 1 missile expansion.
Then skip Slench 3B and go to Alinos. Be sure to pick up 2 UA Expansions, (that's 60+120 extra shots) and an energy tank.
Then skip Cretaphid V3 and head to Acterra. Pick up another 2 UA Expansions, (now a total of 240 extra shots) and a missile expansion.
skip Cretaphid V4 and head to V.D.O. While beating this final level, be sure to pick up 1 UA Expansion and 1 Missle Expansion. Now head back to Slench 2A and try again. You should now have 270 extra shots plus 198 extra life. You should find it easier.
Hint - Freeze Ray (Unlimited Range)In multiplayer mode, if you are playing as Noxus, usually, it is only possible to freeze opponents by firing a charged Judicator blast at close range. However, it is possible to freeze opponents from almost any distance.
To do this, just charge the Judicator blast, but instead of aiming at the opponent, aim at the ground. Make sure to be facing your opponent. Then, release the blast and your opponent will freeze on the spot, no matter how far away they are.
*NOTE: This will only work if your opponent is on the same level ground as you are. Also, it will not work on Trace if he turns invisible.
Unlockable - ImperialistGo to Planet Arcterra. Then, go to the Sic Transit and look for a door with an orange force field. Go through the door using the Magmaul and you will be in a cave with enemies and a force field blocking your way to the Imperialist. Destroy all the enemies in the cave and the force field will disappear. Next, go to where the force field was and you will be attacked by an Artic Spawn. Defeat the Artic Spawn and the Imperialist will appear next to a door with a red force field. Get the Imperialist and you will have that weapon.
Hint: RankingsThere are ranks in the game (Bounty Hunter, Super Hunter, and Elite Hunter) that appear near the WiFi connection button on the multiplayer menu. While Bounty Hunter is the default ranking, Super Hunter requires you get 40 points, while Elite Hunter requires you to get 140 points.
A simple way to get these points is to get two Nintendo DS units and do a multiplayer game from a single card (known as Single Card Play). Play any game and win a battle (Battle Mode is best because you can set the kills and time as low as you want). For winning a battle, you get one point (though if you lose, you lose a point). In this way, you can accumulate points easily to increase your character ranking.
Hint: 4 and 5 Star RanksYou can get ranked four or five stars (Master Hunter and Legendary Hunter, respectively) by scoring 390 points (for four stars) and 750 points (for five stars).