Alien Carnage
Cheat Codes:
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Submitted by: David K.
-= Refill health and jetpack fuel =-
During play, hold B, I, and G together. Harry's health and jetpack fuel refill, but
all accumulated credits are reset to $0. Spend useful credits before using the code,
then treat it as emergency recovery rather than free healing.
Hints and Tips:
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-= Alien Carnage version check =-
This page covers Alien Carnage as supplied in the Windows 3D Realms Anthology
package. Do not use Halloween Harry 1.1 debug-key lists: that earlier version has a
different mission order, and unsupported debug keys can lock or crash the game.
-= Finish the real level objective =-
Every level requires all hostages before the elevator will work. Press R to show the
radar; captive dots appear around Harry, who stays at the center. Search remaining
branches while any captive dot is visible, then stand at the elevator and press Up
after the final rescue.
-= Use switches and dispensers =-
Stand over a floor switch and press Fire to activate it and open the linked door. At
a dispenser, stand in front and press Up plus Fire. Each dispenser sells one
ammunition or protection type, so spend credits on the item that solves the current
route instead of buying automatically.
-= Protect the shared fuel supply =-
The jetpack and Flamethrower use the same fuel. Use the Photon Cannon or another
weapon for routine enemies when vertical travel remains, and tap the jetpack instead
of holding thrust against ceilings or narrow ledges.
-= Separate checkpoints from saved progress =-
Walking through a Terminal activates that checkpoint and replaces the previous one.
Dying returns Harry to the latest active Terminal. F2 saves progress only between
levels, with up to five save slots; leaving without saving can force the entire
mission to be replayed.
-= Plan hostage rescues as recovery =-
Rescuing a hostage restores Harry to full health, while food restores part of the
health bar. When the route is safe, leave an easy nearby hostage until after a
dangerous branch, then return for the full heal before continuing.
-= Match the weapon to the room =-
Photon Cannon shots travel straight across the screen and preserve jetpack fuel.
Missiles track enemies but can choose the wrong target. Grenades hit hard but are
awkward in tight corridors, Micro-Nukes need time to detonate, and Omegas clear
ordinary enemies currently on screen.
-= Destroy generators before clearing a room =-
Some rooms keep replacing enemies from a generator. Destroy the generator before
cleaning up the room, because replacement enemies do not keep paying credits and can
drain ammunition without advancing the route.
-= Treat permanent hazards as timing tests =-
Floating robotic spheres cannot be destroyed, so pass them with timing instead of
spending ammunition. Floor spikes remain dangerous during part of their retracting
animation; wait for a clean opening rather than moving as soon as the graphic starts
to drop.
-= Boss levels change the weapon rules =-
Boss levels remove the other weapons and give the Flamethrower unlimited ammunition.
Learn the attack cycle and use safe firing windows instead of hoarding special
ammunition for a boss that will not let you carry it in.
-= Turn off Turbo when control feels wrong =-
Press T to toggle Turbo. The option was intended for slow computers and can make
movement and jetpack timing difficult on a modern setup, so disable it before
treating unusually fast play as a collision or control problem.
-= Expect Hard difficulty to tax the economy =-
Hard difficulty raises enemy durability, damage, and weapon prices. Use the Photon
Cannon for routine enemies to preserve shared fuel, and reserve purchased weapons for
generators, dense groups, or a dangerous return route.
Solutions:
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-= Compact route - Clear a standard level =-
1. Press R when control begins and note the captive dots around Harry.
2. Explore one branch at a time and activate each Terminal before a dangerous detour.
3. Use floor switches to open captive routes and buy only the ammunition needed for
the next obstacle.
4. Reserve an easy hostage as full-health recovery before the elevator when the
layout permits it.
5. Recheck the radar after the last branch, then return to the elevator and press Up.
6. Save with F2 between levels before entering the next zone.
-= Compact route - Campaign unlock =-
1. Start with Sewers to practice radar sweeps, floor switches, and shared-fuel
management.
2. Clear Factory while destroying generators before spending ammunition on their
replacement enemies.
3. Clear Office Block with enough credits for dispensers on difficult return routes.
4. Completing Sewers, Factory, and Office Block unlocks Alien Ship.
5. Save after each cleared level; enter every boss level ready to use only the
Flamethrower.
Unlockables:
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* Alien Ship - Complete Sewers, Factory, and Office Block.
Reference:
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-= Missions =-
* Sewers - Four regular zones followed by a boss level.
* Factory - Four regular zones followed by a boss level.
* Office Block - Four regular zones followed by a boss level.
* Alien Ship - Four regular zones followed by a boss level.
-= Weapons =-
* Flamethrower - Short-range fire that shares fuel with the jetpack.
* Photon Cannon - Rapid straight shots that preserve jetpack fuel.
* Missiles - Heat-seeking shots that may select the wrong target.
* Grenades - Contact and timed explosions with strong damage.
* Micro-Nukes - Delayed bombs that spread damage along the ground.
* Omegas - Screen-clearing attacks against ordinary enemies.
-= Objects and pickups =-
* Terminal - Activates a checkpoint and replaces the previous Terminal.
* Floor switch - Opens its linked door when Harry stands over it and fires.
* Dispenser - Sells one ammunition or protection type for credits.
* Info Disk - Automatically plays a message from Diane.
* Food - Restores part of Harry's health.
* Present - Adds ammunition to the currently selected weapon.
* TNT - Clears ordinary enemies from the current screen.
* 1 Up - Adds one life.
* Time - Adds time to the level timer.
* Coin and Money Bag - Add credits for dispensers.
-= Keyboard controls =-
* Arrow keys - Move, look up, or duck.
* Ctrl - Use the jetpack.
* Alt - Fire the selected weapon.
* Spacebar - Cycle through weapons.
* 1 through 6 - Select a weapon directly.
* R - Toggle the radar.
* F1 - Display the keyboard layout.
* F2 - Save progress between levels.
* F10 - Restart the current level.
* P - Pause the game.
* T - Toggle Turbo.
* PgUp and PgDn - Look above or below Harry.
* M - Toggle music.
* J - Calibrate the joystick.
* Escape - Return to the Infoboy menu.
Misc Command Line Parameter:
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"skip" will start the game directly from the main menu.
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