Alien Homeworld level
This level is the deck of an arcade game The unique ship is the Shifter It will occasionally fly towards the screen a slightly dodging your tank fire then returning to the formation after a second This is probably the third most dangerous enemy as it fires three to five bullets in a single round If you can get around it it is easy The Boss is one of the classic aliens you see in the background He appears in a large form then begins a small barrage of laser blasts following the movement pattern of a normal alien As he takes damage he gets smaller returns to the top of the screen and gets noticeably faster in its movement The laser blasts increase a great deal If you do not have experience in firing on quickly moving targets you will not survive this encounter If you defeat this difficult enemy you will unlock the quotManiacalquot difficulty level Everything follows expert mode but your tank and your rockets move unbelievably fast You also will automatically have double shot
Play in Alien Homeworld
Play a game on the expert setting and beat Earth After beating Earth you will go to Mercury Beat Mercury to go to the Alien Homeworld
Play in Mercury
Play the game on the expert setting and after you defeat the Earth Boss you will be sent to Mercury
Unlock Maniacle Mode
Beat the game on the expert setting
Unlock Classic Mode
Beat the game under Normal difficulty and Classic Mode will appear at the main menu
