40 lives...
	Easy "Devil's colors" achievem...
	Level select...
	Various Steam Achievements...
	Weapon select...

Quickly press [Left] two times, [Right] two times, [Up] [Down] two times [Up] [Down] [Jump] three times at the title screen. A sound will confirm correct code entry. Start a new game to begin with 40 lives.

Start a new game and choose 6/6/6/6 as your character's colors.

Press [Main Fire], [Jump] two times, [Alternate Fire] [Up] [Right] [Down] [Left] [Up] [Right] [Down] [Left] at the title screen.

Achievement	How to unlock
Addicted to destruction	Complete the game on any difficulty setting 2 times in a row.
Award for effort	Earn an extra life.
Band of followers	Gather 10 quadropods on the screen on level 6.
Bodyguard	Complete the game on any difficulty setting in coop mode without any single shot and deaths from player 2.
Collector	Collect all power-ups in the game (including all hidden power-ups).
Cure for arachnophobes	Destroy level-4 boss.
Cyborg for dinner	Destroy level-4 miniboss.
Devil's colors	Devil's colors.
Disturbed symbiosis	Destroy level-5 boss.
Empty shell	Destroy level-6 boss.
Explorer	Find all hidden power-ups.
Eye surgery	Destroy level-1 boss.
Flesh and bones	Flesh and bones.
Freedom to crawlers	Freedom to crawlers.
Godlike	Complete the game on any difficulty setting with no deaths.
Golden Cyborg	Earn 500000 points.
Good listener	Listen all tracks in music test menu (Complete the game to unlock it).
Gunslinger	Complete the game on any difficulty setting using only alternate firing.
Heart attack	Destroy level-2 boss.
Heavy lifting	Heavy lifting.
Hero for ages	Complete the game on 'Normal' difficulty setting.
Inhuman	Complete the game on 'Hard' difficulty setting.
Insect control	Destroy level-3 boss.
Intestinator	Destroy level-5 miniboss.
Life stealer	Steal a life while playing coop mode.
Out of misery	Destroy level-3 miniboss.
Real power	Use maximum charged alternate fire for all weapons.
Savior of the universe	Complete the game on 'Easy' difficulty setting.
Sharpshooter	Kill 10 enemies with one shot.
Squashed	Squashed.
Super deadman	Die 100 times.
Survival of the fittest	Destroy level-7 boss.
The ultimate team	Complete the game on any difficulty setting in coop mode.
Total devastation	Destroy everything.
Ultra Ultimate Super Cyborg	Complete the game on 'Hard' difficulty setting with no deaths.

Pause game play, then press [Right] [Jump] [Left] [Jump] [Up] [Main Fire] [Up] [Main Fire] [Alternate Fire].