Complete the following achievements to unlock Xbox Live Gamerscore points.
| Achievement | How to unlock
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|---|
| - Destroyed at least 21 invaders in a row.
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- Goliath Killer ( 10 points )
| - Defeated the first Boss Invader.
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- First Taste of Victory ( 10 points )
| - Won an online match for the first time.
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- Hero of Nagoya ( 25 points )
| - Achieved 1 ROW using the Nagoya Attack technique.
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| - Triggered at least 4 rounds of Fever Time.
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- Lieutenant Rank A ( 10 points )
| - Achieved Rank A at the end of a level.
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- Lone Wolf Victory ( 15 points )
| - Completed the game in Arcade Mode.
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- Space Commander Rank S ( 25 points )
| |
- Space Invader Veteran ( 20 points )
| - Won 25 online matches in VS Mode.
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| - Defeated a wave of invaders without missing a shot.
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| - Defeated a Boss Invader without missing a shot.
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- Team Victory ( 20 points )
| - Completed the game in Co-op Arcade mode.
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Complete the game in Arcade mode and all five stages in Stage mode. There are no Bosses in this mode, with the stages cycling endlessly.
Successfully complete Arcade mode. Extra mode will be available after Arcade mode is selected again. It features a higher difficulty.
To obtain higher scores, use the Features wisely to obtain power-ups and start mid-game bonus Rounds. If you complete the bonus Round goal, Fever Time begins where you are given limited time use of Power-up weapons. At this time, you can earn additional points that can't be earned during normal play. Use level, score rate, and chains and Breaks to maximize your score.
You can obtain higher scores by strategically attacking columns of invaders to clear the screen (one of several actions called Features), causing a flashing UFO to fly by. When you shoot the flashing UFO, the game jumps you into mid-game Rounds for additional bonus points.
High scores are resulted from successful combinations of Chains, Features, Breaks, and No Misses.
In multiplayer game, how are the numbers of invaders to be given to your opponent determined through the combo?
1. Shoot down an enemy invader or form a particular Feature
2. The enemy invader is added to the "invader stock" box (Attack box)
3. Shoot down a UFO
4. After shooting down a UFO, the enemy invaders that are showing in the invader stock box will be sent over to your opponent
You can stock up to 12 enemy invaders at a time in the invader stock box. There are five different colored UFOs. The types of invaders that are sent over to your opponent is determined by which UFO you shoot down (meaning, not all 12 invaders are sent over to the opponent all at once).
Complete a stage in Arcade mode under Normal setting to unlock it at the "Extra" menu. You can then replay that stage as desired.
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