Challenge

Overview
Challenge mode is a series of 20 scripted challenges which have a time and combo target. If you meet the time and combo targets you will get a 3 Star rating. Exceeding the time and combo targets significantly will net you a 5 star rating.

Dying on a Challenge will cost you a life and end the challenge early with a Challenge Failed and zero stars.

Star ratings give bonus points which are required for the best scores.

Tactics

 * This mode is about memorizing all the spawn patterns. The best combos are often achieved by NOT firing straight away.
 * Some Challenges require the use of a bomb to complete for the best scores.