Special requirements for unlocking special levels in the "All Training Stages (New Game)" category.

• "Blopfush Trap" (GR-17) -> "Sproing Time"
• "Steel Valley" (Jems) -> "Loud Mountain Hop" and "Under Pressure"
• "Temple Gauntlet" (Jems, GR-17) -> "Scrubb & Ocula, Meet GR-18!"
• "Fear Furnace" (Jems) -> "Jungle On Fire"
• "The Way Is Through" or "A Quick Delivery" (Bug Pieces, GR-17) -> "Uh Oh"
• "Kronkrete Legend" (Jems) -> "Spike Pop Experiment"
• "Slide Madly" and "Bumper Ascent" (Jems, Bug Pieces, GR-17) -> "Throw Rage"
• "That's A New Crisis" (Jems, Bug Pieces) -> "Triple Trouble"
• "Hollow Mountain Hike" (Jems, Bug Pieces) -> "Turn It On!"
• "Flingo Swing" (Jems, Bug Pieces, GR-17) -> "Fire Fall"
• "GR-18, Meet The Flipwip" (Jems, Bug Pieces, GR-17) -> "Nope Cart"
• "Boom Boom Pop" (GR-17) -> "Think Dangerously"

Note: If you're looking for a general guide to unlock certain VEND-Rs and icons then check out this Google Doc created by Slothybutt.