Play a Mission in Normal Mode

Complete a game of Retro Mode

Play a Mission in Time Attack Mode

Purchase the "Red Shot" upgrade during a mission

Fully upgrade the "Sniper Blaster" during a mission

Fully upgrade the "Spread Blader" during a mission

Fully upgrade the "Rapid Blaster" during a mission

Purchase an "Extra Life" during a mission

Purchase a "Shield Recharge" during a mission

Overkill a Vader by dealing more damage than it's total health

Earn a Field Promotion by destroying a UFO in Retro Mode

Reach the Commander rank in Retro Mode

Destroy a total of 25 UFOs in Retro Mode

Complete Wave 1 of Retro Mode

Complete Wave 5 of Retro Mode

Complete Wave 10 of Retro Mode

Complete Wave 20 of Retro Mode

Reach a Highscore of 2000 or more in Retro Mode

Reach a Highscore of 5000 or more in Retro Mode

Reach a Highscore of 10,000 or more in Retro Mode

Defeat the first boss in Operation: Reloaded

Defeat the second boss in Operation Reloaded

Finish Operation: Reloaded and Save the Earth!

Reach the first boss in Operation: Reloaded without buying any upgrades

Complete Operation: Reloaded with a score of 5000 or more

Complete Operation: Reloaded with a score of 10,000 or more

Complete Operation: Reloaded with a score of 25,000 or more

Complete Operation: Reloaded in Deathwish Mode

Complete Operation: Reloaded in 600 seconds or less (in Time Attack Mode)

Complete Operation: Reloaded in 240 seconds or less (in Time Attack Mode)

Kill 5 Vaders in a row without missing a shot or taking damage

Kill 10 Vaders in a row without missing a shot or taking damage

Kill 25 Vaders in a row without missing a shot or taking damage

Kill 50 Vaders in a row without missing a shot or taking damage

Kill 100 Vaders in a row without missing a shot or taking damage

Clear an entire wave without missing a shot or taking damage

Clear a boss wave without missing a shot or taking damage

Complete a wave when all your defenses are destroyed

Complete a wave with all 4 shields at full power

Destroy the final Vader of a wave just before it reaches Earth

Kill your first Vader

Kill a total of 100 Vaders across all games

Kill a total of 250 Vaders across all games

Kill a total of 1000 Vaders across all games

Kill a total of 2500 Vaders across all games

Kill a total of 5000 Vaders across all games

Kill a total of 10,000 Vaders across all games

Kill a total of 5 Bosses across all games

Kill a total of 20 Bosses across all games

Kill a total of 100 Bosses across all games

Complete the Tutorial Mission

Kill a total of 666 Vaders across all games

Lose because the Vaders reach the bottom of the screen

Try out Mouse controls and Keyboard controls

Spend a total of 250,000 points in the Upgrades Shop

Spend a total of 1,000,000 points in the Upgrades Shop

Check out the Credits page

Complete one of the Seasonal missions in Normal Mode

Complete "Operation: Bag Eggs" in Normal Mode

Complete "Operation: Heatwave" in Normal Mode

Complete "Operation: Nightmare" in Normal Mode

Complete "Operation: Naughty List" in Normal Mode

Complete each Seasonal Mission atleast once

Fully upgrade the Sniper, Spread and Rapid Blasters atleast once

Unlock every other award in the base game

Purchase the "Classified Projects" DLC

Fully Upgrade the "Zapper Blaster" during any mission

Fully Upgrade the "Seeker Blaster" during any mission

Fully Upgrade the "Bounce Blaster" during any mission

Purchase the "Retro Shields" during any mission

Purchase the "Rebound Shields" during any mission

Purchase the "Recharge Shields" during any mission

Complete "Operation: First Contact" in Normal Mode

Complete "Operation: Homebound" in Normal Mode

Complete "Operation: First Contact" in 150 seconds or less (in Time Attack Mode)

Complete "Operation: Homebound" in 240 seconds or less (in Time Attack Mode)

Complete "Operation: First Contact" in Deathwish Mode

Complete "Operation: Homebound" in Deathwish Mode

Fully Upgrade the Zapper, Seeker and Bounce blasters atleast once

Unlock every other achievement in the "Classified Projects" DLC