Overview:
-Offline (breakdown): 12 (7 , 4 , 1 )
-Online (breakdown): 0
- Approximate amount of time to 100%: 10-15 Hours
-Minimum number of playthroughs needed: 1+ (See Trophy Guide)/1 Challenge Mode/10 Music Mode
-Number of missable trophies: None
- Glitched trophies: None
- Do cheat codes disable trophies?: No Cheats
Introduction
Space Invaders Infinity Gene is a twist on the classic game that takes you out of the vertical 2D world and throws you into a 3Dish type world sending your ship in variety of directions. There are really only two things you need to worry about: moving your ship and shooting. Otherwise, it's all about dodging the nearly endless hordes of enemies on screen while also avoiding incoming fire. The trophies associated with Space Invaders Infinity Gene are rather easy once you get used to the game and can be done fairly quickly.
Walkthrough
Step 1: Play Through All 99 Challenge Mode Levels
Go to the Challenge option on the Game Menu and play through all 99 levels. This is very easy to do as you can die and just restart the last level you were on. Also by doing this part first, you will get a feel for the game as well as unlock a lot of the extras (extra starting lives, guns, bonus levels, etc). Once you finish all 99 levels, you will unlock Nightmare Difficulty & get Challenge Mode Clear.
Step 2: Play Through Normal Mode (Easy Difficulty)
Start up a Normal game on Easy difficulty (also, make sure you set you lives to the maximum amount you have unlocked). On the very 0 level, make sure you hit the UFO before you are warped to the true first stage as it will net you Classic UFO Hunter. Play through the game and try to aim to finish it without continuing/quitting as it will net you Continue-Free Clear, but if you die, just keep playing until you finish it out. Once you finish the game and beat the final boss (in level 5-6), you will get Easy Difficulty Clear.
Step 3: Get Misc Extra Trophies
You want to aim for the following trophies during this step:
- Go to level 5-2 and use the "Field" Gun. Play through the beginning part of the stage with the fire button hold down and make sure you keep your chain going and hit everything. If you do it correctly, then right after the first "boss" you should easily be over 1500 chain hits & well over 10,000,000 points by then. This will get your High Score of 10,000,000 & 1,500 Chained.
- Play Bonus level 1-1 and aim to stay right under the UFO when it fires as much as possible so it racks up Nagoya Attacks (don't fire, just hover under him). If you need to, you can eliminate some of the other aliens to give yourself room to stay under him. I used the "Field" gun and eliminated just the top row when the UFO went to the side so I wouldn't hit it too much, giving myself free reign to stay under the UFO when it attacked. If done correctly, you will get WAY more than 1,000 Nagoya attacks. This will get you 1,000 Nagoya Attacks.
Step 4: Play Through All Bonus Levels
You should have all of the Bonus levels unlocked at this point after doing the first 2 steps (if not, see the note below). Go through and play all the "Bonus" levels (1-1 through 2-6). Once you complete that it will unlock Insane Difficulty.
Note: If you don't have all the bonus levels unlocked at this point, then go back into the normal game go to level 5-2 and use the "Field" Gun. Play through the beginning part of the stage with the fire button held down and make sure you keep your chain going and hit everything. Once you defeat the first "boss" (you should easily be over 1500 chain hits & make upgrading very quick), kill off your remaining lives and repeat until you unlock it. There are other levels described through out this thread as well to "boost" your evolutions if you get bored of that one).
Step 5: Normal Mode (Normal, Hard, Insane & Nightmare Difficulties)
Go back to the main menu and change the difficulty to Normal. Go back to the normal game and select level 5-6 to play. Just beat the level and when your final standings appears (after credits), you will unlock Normal Difficulty Clear. Repeat for the other 3 difficulties and you will also get Hard Difficulty Clear, Insane Difficulty Clear, & Nightmare Difficulty Clear.
Step 6: Play Music Mode Ten Times
In the Game Menu, select Music, then select any song of your hard drive. Once the stage starts, just play through it. Play through Music Mode 10 times and the trophy will pop after the 10th one. You do not need to beat the stages, so the easiest way would be to just kill yourself quickly and then restart.
NOTE: You need to have some type of music stored on your hard drive in order to play Music Mode!
Step 7: Play Through Normal Mode Without Continuing/Quitting
(You can skip this if you got it during step 2)
I saved this step until last because it is definitely the hardest trophy in the game. By now you should have an excellent grasp of the game and have all the extras unlock that can help you out. Make sure you put the difficulty to Easy and put your lives to 9 so you have the best chance of beating it. If there is a certain level that is causing you problems, practice it before hand until you have it down. Keep trying to make it all the way from Level 0 all the way through 5-6. Once you beat it without continuing/quitting, you will get Continue-Free Clear.