For this, you need to accumulate 1,000 resources and keep them until the end of the mission. (Juggernaut, Rumbler, Turtle, or Crasher)Use the Orbital Laser Special Weapon (General Cai).Earn a silver medal (or better) on all missions in the Story mode.Earn a Bronze (or better) medal in a Single Player Mission.Beat a Chapter 4 mission or higher with zero cores captured.Finish all the missions in Chapter 1 in Story Mode.Use the Temporal Cannon Special Weapon (Colonel Rissler).Use the Resource Reinforcement Special Weapon (Professor Briel).Use the Tower Overcharge Special Weapon (Advisor Zacara).Use the Core Teleport special weapon (Professor Taylor).Use the Precision Targeting Special Weapon (Rear Admiral Phillips).Survive 100 waves on Grinder challenge mode on any mission.Win a mission with at least 1,000 resources remaining.Win a mission with at least 5,000 resources remaining.Win a mission with at least 10,000 resources remaining.Using only Gun towers, Win any chapter 4 (or later) mission.Using only Inferno towers, Win any chapter 4 (or later) mission.Using only Cannon towers, Win any chapter 4 (or later) mission.Using only level 1 towers, Win any Chapter 4 (or later) mission.Win a chapter 4 (or later) mission with level 3 towers only and no selling.Survive 100 waves on any Super Grinder challenge mode.Build every tower and every upgrade for each tower.Save a core that is less than 10 seconds away from the map's exit point.Earn a Gold medal in a Coordinated Defense Multiplayer Mission.Build and fully upgrade each tower type in one mission.Use the speed up control for a total of 60 seconds in any mission.Use the reload checkpoint option five times in a single mission.Use the command shuttle to move 6 map sections in Mission 6.Win a Gold medal on mission 19 without using the Command Shuttle.You use resources to build your towers. All trademarks are property of their respective owners in the US and other countries. This is cumulative. For this, you need to accumulate 1,000 resources and keep them until the end of the mission. Simply build only Cannon towers. You sell a tower by selecting the tower and selecting the bottom option to "Sell". Simply unlock a Tower Augment and equip it on the tower from your Loadout screen. There have been reports that the Coordinated Defense Gold Medals do not count towards this trophy, however it has not yet been confirmed. Full Defense: Build 50 towers in one mission. Play a Mission in Chapter 4 or 5 (Missions 12-20), and don't upgrade any towers. In other words, you get counted for one medal regardless of whether or not you have gotten it on open / competitive / competitive unlimited sell and regardless of whether or not you have gotten it on easy / normal / hard / elite. yet the achievement Master Strategist ( Earn 100 gold medals ) still locked ? Once in mission, hold

If you want to do this online, you pick multiplayer from the main menu and choose the ‘DG Coordinated Defense Mode’ on any mission. Flawless Victory: Earn at least one gold medal. © Valve Corporation. Just play mission 19, and don't use the Command Shuttle to move any map segments. Earn a gold medal on all the modes of Overflow. Unless you do something horribly wrong, you should get this on the Prologue mission. Simple, complete a mission without selling any towers. This is cumulative. As the description states, you need to gold medal on all 5 modes of the map. Build 100 Tesla towers in any missions. If you have not earned this by the time you finish the Story Mode, you will be able to focus on it when you go for If you have not earned this by the time you finish the Story Mode, you will be able to focus on it when you go for If you have not earned this by the time you finish the Story Mode, you will be able to focus on it when you go for If you have not earned this by the time you finish the Story Mode, you will be able to focus on it when you go for If you have not earned this by the time you finish the Story Mode, you will be able to focus on it when you go for If you have not earned this by the time you finish the Story Mode, you will be able to focus on it when you go for If you have not earned this by the time you finish the Story Mode, you will be able to focus on it when you go for If you have not earned this by the time you finish the Story Mode, you will be able to focus on it when you go for Playing Mission 14 (Surface Tension), you will easily be able to achieve this. If you get a gold medal on Easy & Hard, that's still one gold medal. Full list of all 87 Defense Grid: ... 1 guide. A Gold Medal is the highest award you can  get for any level, with Silver and Bronze beneath that. Sell 10 towers in any missions and this trophy is yours. If the player does not know how to place the towers in Defense Grid, or their uses, the player probably won't get very far.