Evade a rocket by dashing

Use your saucer's Repulse-O-Tron to fend off homing missiles

Explore the more offbeat parts of the mothership

Destroy multiple humans with a human-made explosive

Consume a human brain to kickstart your shield regeneration

Revisit a missionless invasion site and complete a challenge there

Use PK to destroy a human with another human

Destroy a human with a weapon and another with a psi ability at the same time

Abduct a cow with your saucer

Throw something into something else with the saucer's Abducto Beam

Invade Rockwell

Accelerate Brain Extract or Transmog by mashing that button like you mean it