Complete the story on any difficulty setting.

Complete the story on the Challenging setting.

Complete the story on the Genuine setting.

Complete the story on the Destructive setting!

Complete the story on the Catastrophic setting!!

Complete the first mission in the story on any difficulty setting. Achievement might be a strong word for this one.

Complete mission five in the story on any difficulty setting, by wrecking a Destroyer Base.

Complete mission 14 in the story on any difficulty setting, by clearing huge rocks with the Spread Gun.

Complete mission 18 in the story on any difficulty setting. So many fighters, but the right weapons can take them all down in time.

Complete mission 25 in the story on any difficulty setting. Defend Earth!

Complete mission three in the story on the challenging setting, and show them it takes more than rocks to stop Earth!

Complete mission 15 in the story on the challenging setting, by taking down a Destroyer Base with both Missile and Laser hardpoints.

Complete mission 25 in the story on the challenging setting. Defend Earth with gusto!

Complete mission 38 in the story on the challenging setting, and continue your chase to the enemy mothership.

Complete mission 19 in the story on the genuine setting, and prepare for bad news.

Complete mission 25 in the story on the genuine setting. Defend Earth with all you have!

Complete mission 35 in the story on the genuine setting. With superweapons at hand, it's nearly over...

Earn a silver medal in mission ten in the story, by completing it with a spare unused ship.

Earn a silver medal in mission 17 in the story. Use missiles including the Swarm to attack from a safe distance.

Earn a silver medal in mission 23 in the story. Magnetic mines will help tear apart the Destroyer Base with time to spare.

Earn a silver medal in mission 33 in the story, by using the Vortex Missiles to hold Destroyers in place.

Earn a silver medal in mission 40 in the story, leaving the Destroyers eradicated with Earth ships to spare.

Earn a gold medal in the first story mission. Not much trouble compared to what's ahead...

Earn a gold medal in mission seven in the story by clearing out a storm of rocks with no spare ships.

Earn a gold medal in mission 20 in the story to retaliate for what the Destroyers have done.

Earn a gold medal in mission 28 in the story. One enemy nuke is all it takes to blemish your record.

Complete all of the survival missions on the genuine setting. With no extra ships, these missions can be among the hardest.

Earn a gold medal in mission 34 in the story. Use those heavy weapons right and even those tough bases will be taken down in no time.

Earn a gold medal in mission 39 in the story, turning what should be an epic last-breath battle into a one-sided crushing.

Complete mission 14 in the story on the destructive setting to set a textbook example of rock crushing for the ages.

Complete mission 25 in the story on the destructive setting. Defend Earth... if you can!

Complete mission 37 in the story on the destructive setting. Can you make it?

Complete mission ten in the story on the catastrophic setting.

Complete mission 25 in the story on the catastrophic setting. Defend Earth, if at all possible.

Complete mission 37 in the story on the catastrophic setting. Getting this far is a rare feat indeed.

Earn ten silver medals in the story by completing missions on genuine with ships or time to spare.

Earn 25 silver medals in the story to earn this poorly named achievement.

Earn 80 combined bronze, silver, and gold medals in the story by out-classing the World Destroyers on the genuine setting.

Earn every silver medal in the story to prove your well-rounded proficiency against the World Destroyers on the genuine setting.

Earn 18 gold medals in the story by completing missions on genuine optimally.

Earn 39 gold medals in the story. One more to go!

Earn every gold medal in the story to prove mastery over every mission on the genuine setting.

Clear the story with 50 or fewer ships lost per player. Now you're ready for the harder settings!

Clear the story on Challenging with 50 or fewer ships lost per player. It takes some consistent piloting to get through all those missions.

Clear the story on Challenging with zero or fewer ships lost per player. Play well in the bonus stages to get into the negatives!

Clear the story on Genuine with 100 or fewer ships lost per player. One hundred sounds like a lot, but those destroyers are tough.

Clear the story on Genuine with 50 or fewer ships lost per player. Practice those tough levels before trying this one.

Clear the story on Genuine with 25 or fewer ships lost per player. Getting silvers is hard enough, but can you do it consistently?

Clear the story on Genuine with zero or fewer ships lost per player. Even with the bonus stages, there's very little room for error.

Clear the story on Genuine with minus 19 or fewer ships lost per player! Only two ships per player can be lost or missed in this one!

Clear the story on Destructive with 100 or fewer ships lost per player. Those restarts add up pretty fast on this setting!

Clear the story on Destructive with 50 or fewer ships lost per player. This one takes true mastery to pull off.

Clear the story on Destructive with zero or fewer ships lost per player! If you get this one, let us know.

Clear the story on Catastrophic with 50 or fewer ships lost per player. Isn't clearing Catastrophic hard enough?

Score 35 000 points in the Horde Mode with any number of players.

Score 100 000 points in the Horde Mode with any number of players.

Score 250 000 points in the Horde Mode with any number of players.

Score 500 000 points in the Horde Mode with any number of players.

Score 1 000 000 points in the Horde Mode with any number of players.

See a Perfect Destroyer in Horde Mode by reaching Wave 144. Nothing less will keep you down!

Score over 20 000 points in Retro Mode with any number of players to get the high score. That's what it was all about in those days.

Score 50 000 points in the Retro Mode. The controls may be simple, but getting this far isn't easy.

Score 100 000 points in the Retro Mode. We'll use modern tech to keep it from resetting to zero, but the rest is up to you!

Earn a medal in any race mission.

Earn eight out of fifteen combined bronze, silver, and gold medals available from race missions.

Earn a gold medal in all five race missions.

Earn a medal in either of the minesweep missions.

Earn a gold medal in both minesweep missions.

Complete the story on any difficulty setting with just one player.

Complete the story on Challenging with just one player.

Complete the story on Genuine with just one player.

Complete the story on Destructive with just one player.

Complete the story on Catastrophic with just one player.

Earn 60 (half) of the combined bronze, silver, and gold medals in the story with just one player.

Earn every gold medal in the story with just one player. You can't lose any ships except for the final mission, which allows one.

Score 750 000 points in the Horde Mode with just one player.

Complete the story on any difficulty setting with exactly two players.

Complete the story on Challenging with exactly two players. The enemy threat is a little tougher than in solo, but together you can do it.

Complete the story on Genuine with exactly two players.

Complete the story on Destructive with exactly two players.

Complete the story on Catastrophic with exactly two players.

Earn 60 (half) of the combined bronze, silver, and gold medals in the story with a team of exactly two players.

Earn every gold medal in the story with a team of exactly two players. You can't lose any ships unless you start with five or more each.

Score 1 200 000 points in the Horde Mode with no more than two players.

Complete the story on any difficulty setting with exactly three players.

Complete the story on Challenging with exactly three players. Some players may be better than others but everyone can help.

Complete the story on Genuine with exactly three players.

Complete the story on Destructive with exactly three players.

Complete the story on Catastrophic with exactly three players.

Earn 60 (half) of the combined bronze, silver, and gold medals in the story with a team of exactly three players.

Earn every gold medal in the story with a team of exactly three players.

Score 1 600 000 points in the Horde Mode with no more than three players.

Complete the story on any difficulty setting with exactly four players.

Complete the story on Challenging with exactly four players. Team up to clear out the enemy clutter before it overwhelms your squad.

Complete the story on Genuine with exactly four players.

Complete the story on Destructive with exactly four players.

Complete the story on Catastrophic with exactly four players.

Accomplish the story on genuine with minus 80 or fewer ships lost! You need four players, and can only miss four ships!

Earn 60 (half) of the combined bronze, silver, and gold medals in the story with a team of exactly four players.

Earn every gold medal in the story with a team of exactly four players. You can't lose any ships unless you start with four or more each.

Score 2 000 000 points in the Horde Mode with any number of players (four recommended). They just won't quit, but neither will you!

Reach Wave 7 in Survival Horde mode.

Reach Wave 12 in Survival Horde mode.

Earn a gold medal in Challenge 3. Sixty seconds? Just Machine Guns? Earth at stake? No Problem!

Complete every challenge from 1 through 5 on Genuine. It's Corkins Time!

Earn gold medals on every challenge from 1 through 6. They're called challenge levels for a reason!