Thunderflash Achievements Here is the full list of all 20 Thunderflash achievements.Filter Achievement View View Image viewList view Sort by TrueSteamAchievement desc TrueSteamAchievement asc Achievement name desc Achievement name asc TSA Ratio desc TSA Ratio asc Gamers desc Gamers asc Steam order Date won desc Date won asc What are achievement flags? Click to find outApply Mission 1Complete the Mission 1 Mission 2Complete the Mission 2 Mission 3Complete the Mission 3 Mission 4Complete the Mission 4 Mission 5Complete the Mission 5 Speedboat MasterComplete 2-3 Bike RidersComplete 3-2 Jet Pack HeroesComplete 4-2 Road to the Final VictoryComplete 5-4 Tank DestroyerDestroy a Tank Helicopter CrashDestroy a Helicopter Tower DefenseDestroy 3 towers Cannon SmashersDestroy 5 cannons Standard EndingBeat the game Extra EndingBeat the game without using "Stage Select" mode Boss RushBeat the "Boss Rush" mode 100Destroy 100 enemies in "Survival" mode 250Destroy 250 enemies in "Survival" mode 500Destroy 500 enemies in "Survival" mode CommandoBeat the game in Hardcore Mode