Recommended zone selection order
Generally, the main mission (Garland Square) should
adjust difficulty to according to player skill, but if you are
new to the game or have not played the arcade version, here is
the recommended order in which you should select the zones, with
the least challenging first, and most challenging last. This also
seems to be the main default order that the game chooses on selection
timeout:
Drycreek Plaza (Easy)
Garland Park (Medium)
Garland Technology Center (Hard)
Increasing lives and credits
Completion of Story Modes will normally gain you one
Life and Credit. This is shown by a screen following completion,
indicating what you have gained/unlocked in the game. Note that
losing the game by running out of Credits can also gain you a
Life/Credit. Note that you can change the number of Credits you
start with in addition to Life, in the game settings.
Crisis Missions secret weapons
Kill the opponent in brown body armor that appears for a short time in the following levels to unlock the corresponding weapon.
Flame thrower: Drycreek Plaza; in the store room
Gatling gun: Grassmarket Street; in the first open area
Grenade launcher; Belforte Hotel
Laser rifle: Garland Technology Center; the room with the automatic gun turrets
Missile launcher: Garland Park; among the STF trucks.