For Stamina and Time On Your Hands and insatiable need for completion

Beat Kleiver in Desert Race

Destroy Metal Head Beasts

Rescue Wastelanders

Defeat Marauders in Arena

Defend Ashelin at Oasis

Explore Eco Mine

Defeat Veger's Precursor Robot

Destroy Incoming Blast Bots

Reach Metal Head Area via Sewer

Kill Dark Plants in Forest

Defend Port from Attack

Destroy Metal-pedes in Nest

Take Out Marauder Stronghold

Defend HQ from Attack

Destroy War Factory Defenses

Rescue Seem at Temple

Activate Astro-Viewer in Forest

Destroy Metal Head Tower

Break through Ruins

Destroy Final Boss

Collect 125 Metal Head Skull Gems

Collect 50 Precursor Orbs

Collect 600 Precursor Orbs