Hidden Deep

Completely Shafted

Ride a elevator from top to bottom non-stop. Yes, that's possible.

Indestructible

Complete a level with high enemy presence without dying (must be 50+ enemies)

M-M-M-Monsterkill

Kill 1000 monsters

True Miner

Drill 100 meters of tunnel using the Tunnel Boring Machines

Scan-Ball Kill

Kill 3 enemies using one Scan-Ball

Just hanging around

Kill 5 enemies in a row while hanging on the grappling hook

Prospector

Find a hidden cave using the Terra-Scanner

Flying rock

Fall from 50 meters or more

End of the line

Rappel down the full length of your grappling hook's line

Helping Hand

Let another team member use your rope to climb

Wheeeee!

Use the grappling hook as a zip-line

Gunslinger

Kill 20 enemies with your gun without dying

True Killer

Kill 100 monsters

Not so fast!

Kill the ceiling tentacle before it kills you on your first encounter