Complete the indicated task to unlock the corresponding trap.

Trap	How to unlock
Grind Cooker Trap	Complete "Grind Cooker Trap" during Act III.
JYA Gun Turret Trap	Complete the "Big Brother Sam" optional quest during Act II.
Pandora's Box	Complete "The Siege of Wondertown Land".
Pop Rocket Trap	Complete "The Firework Show" during Act III.
Pyro Geyser Trap	Complete "Up in the Air" during Act I.
Señor Freeze Trap	Complete "Find 4Kim" during Act II.
Siegfried The Great Trap	Complete the "The Most Epic Quest for EXP" optional quest during Act IV.
Tesla Trap	Complete "Tastes Like Chicken" during Act III.