Complete the following achievements to collect their Xbox Live Gamerscore points.
| Achievement | How to unlock
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- 10 Items No less (10 points)
| - Enable a Tower Augmentation Item on 10 Towers.
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| - Earn a gold medal on every mission in Story mode.
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| - Build 20 towers of any type in one mission.
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- Base Defender (100 points)
| - Complete the single player campaign in Story Mode.
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| - Finish all the missions in Chapter 1 in Story Mode.
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- Brothers In Arms (10 points)
| - Earn a Bronze (or better) medal in a Coordinated Defense Multiplayer mission.
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- Burn Baby Burn (10 points)
| - Build 100 Inferno towers.
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| - Save a core that is less than 10 seconds away from the map's exit point.
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| - Use the speed up control at 3x for a total of 60 seconds in any mission.
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- Death From Above (10 points)
| - Use the Orbital Laser Special Weapon (General Cai).
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| - Build at least 1 of each tower type in any single mission.
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- Field Promotion (10 points)
| - Earn a silver (or better) medal.
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| - Win a mission with at least 10,000 resources remaining.
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| - Using only Inferno towers, Win any Chapter 4 (or later) mission.
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- Flawless Victory (10 points)
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| - Build 50 towers of any type in one mission.
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| - Build and fully upgrade each tower type in one mission.
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- Full Potential (10 points)
| - Win a chapter 4 (or later) mission with level 3 towers only and no selling.
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| - Earn a Gold medal in a Coordinated Defense Multiplayer Mission.
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- Go To Your Home (10 points)
| - Use the Core Teleport special weapon (Professor Taylor).
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- Great Ball of Fire (10 points)
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| - Using only Gun towers, Win any chapter 4 (or later) mission.
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- Happy Returns (10 points)
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| - Build 100 Concussion towers.
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- Hey! That's mine! (10 points)
| - Kill an alien carrying a power core.
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- If At First You Don't Succeed, Retry Again (10 points)
| - Use the reload checkpoint option five times in a single mission.
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| - Sell 10 towers or more in a single mission.
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- Master Builder (10 points)
| - Use the command shuttle to move 6 map sections in Mission 6.
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- Master Siege Breaker (55 points)
| - Survive 100 waves on any Super Grinder challenge mode.
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- Master Strategist (100 points)
| - Earn 100 Gold Medals on any missions.
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| - Using only level 1 towers, Win any Chapter 4 (or later) mission.
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| - Use the Resource Reinforcement Special Weapon (Professor Briel).
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- No Fast Blast (10 points)
| - Use the Temporal Cannon Special Weapon (Colonel Rissler).
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| - Win any mission without selling any towers.
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| - Build 100 Temporal towers.
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- Now With Sprinkles (10 points)
| - Enable a Tower Augmentation item on any tower.
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- Penny Pincher (10 points)
| - Win a mission with at least 5,000 resources remaining.
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- Planet Defender (30 points)
| - Earn a silver medal (or better) on all missions in the Story mode.
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- Pumped Up Towers (10 points)
| - Use the Tower Overcharge Special Weapon (Advisor Zacara).
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| - Use the Reload Checkpoint option.
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- Salvage Rights (10 points)
| - Kill an alien boss creature. (Juggernaut, Rumbler, Turtle, or Crasher)
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- Shell-shocked (10 points)
| - Using only Cannon towers, Win any Chapter 4 (or later) mission.
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- Shoot That Guy (10 points)
| - Use the Precision Targeting Special Weapon (Rear Admiral Phillips).
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- Siege Breaker (55 points)
| - Survive 100 waves on Grinder challenge mode on any mission.
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| - Win a mission with at least 1,000 resources remaining.
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- Thanks for Playing! (5 points)
| - Earn a Bronze (or better) medal in a Single Player Mission.
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- The Not-So-Friendly Skies (10 points)
| - Build 100 Missile towers.
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- The Path Most Traveled (10 points)
| - Win a Gold medal on Mission 19 without using the Command Shuttle.
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| - Build every tower and every upgrade for each tower.
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| - Beat a Chapter 4 mission or higher with zero cores captured.
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- Warning Shots (10 points)
| - Play a DG Fighter Multiplayer mission.
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- What IS that? (10 points)
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- Winning Shots (10 points)
| - Earn a Victory in a DG FighterMultiplayer mission.
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- Would you like a boost with that? (5 points)
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- Yellow Beats Green (5 points)
| - Upgrade a level 1 tower to a level 2 tower.
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