First blood
ACH_FIRST_BLOOD94.4%

Achievements and their recorded unlock rates.
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ACH_FIRST_BLOODACH_WAVE_5ACH_ALL_TURRETSACH_FIRST_BOSSACH_FIRST_TURRET_UPGRADEACH_FIRST_WEAPON_UPGRADEACH_MAX_TURRETACH_MAX_WEAPONACH_WIKI_OPENEDACH_WAVE_10ACH_ALL_STRUCTURESACH_KILLS_1000ACH_WIKI_TEST_TURRETACH_WIKI_TEST_WEAPONACH_FLAWLESS_5ACH_KILLS_10000ACH_KILLS_5000ACH_WAVE_20ACH_WAVE_15ACH_FLAWLESS_20ACH_FLAWLESS_15ACH_FLAWLESS_10ACH_KILLS_1000000ACH_KILLS_500000ACH_KILLS_100000ACH_KILLS_50000