Upgrade and gain power. Enable the capability to counterattack enemies.
field: 1D on got item: power up obstacle: chase on pressed: turn
field: lanes on pressed: jump on got item: power up
weapon: change field weapon: vertical field: spike field: rotate on pressed: jump on pressed: shoot on got item: power up
player: limited vision on sliding: move on got item: power up
obstacle: bounce on got item: power up weapon: explosion on holding: move
player: bounce obstacle: bounce on got item: power up
