Powerups, incremental difficulty + new enemy

Powerups

- HP revival: +1 hp

- Autofire: Rest your left hand! ;) Or, if you like, you can manually shoot as well, for increased fire rate

- Wide shot: Three bullets per shot, two of them angled

- Spread bomb: will release six particles around it

Incremental difficulty

The kind and number of enemies increase in time.

New enemy

A rocket-type enemy that will try to attack you head-on