Complete the ship log.

End a time loop (Alive) after having taken (and healed) over 1000 damage

No going back.

Bring an artifact back to the museum.

Eat 10 burnt marshmallows.

Destroy the Model Rocket by flying into the sun or Hollow's Lantern.

Enter Giant's Deep ocean fast enough to break through the current.

Use your suit's oxygen in an ill-advised manner.

Pick up all traveler instruments simultaneously with your signalscope.

Throwing enemies around makes handling big groups easier. (Ignored in training mode.)

Hit 3 enemies in a single strike. (Ignored in introduction level.)

In the Sanctuary, throw an enemy into the mountains.