One thousand demons
1000 ships sunk

Invulnerable
All episode levels completed with 3 stars

Top marks
Level completed without using more than 5 towers

Favorite tower
All improvements purchased on a single tower

Warlock
One spell improved to maximum level

Strike me down!
Level failed 3 times in a row

Last chance
Level completed with last remaining life

Sea dog
Level completed in fast mode

Long John Silver
Only one enemy ship attacked the outpost gates during the level

Magic storm
200 spells cast