Fight agianst quotBig Zamquot
Get all your characters to level 21 or 22 Upgrade all you can before you start the fight Your front lines should consist of the Tristan Gundam Hal Gelgoog Special and Tremmie Keampher The shotgun should be equipped to the Keampher because of the speed of the MS Have the Xamel Cannon equipped to the Guncannon MS and keep your Gyan Guncannon and whatever mech Gavenger is using in the back lines to charge When you see the Big Zam about to use his boost attack switch whichever character has the lowest energy to the ones with the highest Use Gavengers Chaff Field This will block every attack from the Big Zam except his earthquake attack However remember the Chaff Field only lasts for a single turn and the Big Zam uses boost attacks for three or four turns in a row Keep Gavengers energy up He only needs to use Chaff Field for the first two attacks because the third is usually earthquake unless he uses the full charge technique Then Chaff Field the first two and ignore the last two attacks While Gavenger has the Chaff Field up use your other characters boost attacks Try to stick to melee attacks and do not use the Guncannons Mega Fire Use the Xamel Cannon because like the shotgun it reduces target armor by 30 and you cannot use it with Megafire You are not going to win this fight by sheer force Have Tristan use the Heal All technique and you should have a few repair units in your items screen Do not be afraid to use them Also use Offense Hack to keep him from using his big attack Note If he uses his big attack without you using the Chaff Field at least one of your characters will die
Hidden Gundams
Follow these instructions to obtain the hidden Gundams in this game
UnlockableHow to unlockAltronFound in Mt Trial After obtaining Lv 4 Card KeyBurning GundamFound in Mobile Colleseum After defeating shadow championDeathscytheFound in Mt Trial After obtaining Lv 5 Card KeyHeavyarmsFound in Mt Trial After obtaining Lv 3 Card KeyMaster GundamFound in Another G System After beating Ultima and Omega GundamsNu GundamFound in G System 05 After obtaining Lv 5 Card KeySandrockFound in Moon Ark After obtaining Lv 3 Card KeyWing GundamFound in Giant G System After Aeon rejoins partyMoon Arc
Make sure you check the Moon Arc when you gain new card keys to find new MS and weapons Note Not all card keys will unlock doors
Selecting party members
Learn what each person excels at and equip them accordingly For example Tristan is good at melee Give him good melee weapons and MS Fritz is good a ranged attacks Give him good ranged weapons and MS