Complete “The Moebius Factor” mission before Kerrigan destroys 6 Abandoned Structures on Hard difficulty.
Kill 25 total units with Vulture Spider Mines in the “Cutthroat” mission on Normal difficulty.
Complete all the Guide Two achievements.
Don’t train additional SCVs before purchasing Han’s contract in the “Cutthroat” mission on Hard difficulty.
Destroy 10 cloaked or burrowed units in a single Melee game.