Cheats & Secrets
Level select
The game has ten missions and Spartan dies a lot, so practicing one stage at a time is the sane way to learn it. On the title screen, enter:
LSpace
Then open the Options menu. A stage picker appears that wasn't there before. The pipe maze and the zipline cavern are the two stages most worth grinding before you commit to a real run.
In-game codes
Pause mid-stage and tap one of these. Unpause and the effect is on:
- Level skip: LKK
- Free life: SpaceLKL (repeatable, mash it before unpausing if you want a stack)
- Five grenades: KK
- Shotgun: SpaceSpaceK
- Max health: KK
Free life and max health together are basically the difference between finishing the game and giving up at boss two.
What to grab and what to leave alone
Items work the same in side-scrolling and top-down stages, and you'll see the same ten icons throughout the game. The trap is that most of them look like upgrades and only some are.
The grenade swap is a one-way trip
Spartan can carry one type of grenade at a time. Picking up a Flame Grenade when you already have five Hand Grenades doesn't add to your stack. It deletes the Hand Grenades and gives you three Flame ones. Flame Grenades also set the floor on fire, and that fire hurts you the same as the enemies. Same story with Freeze Vials: throw one at your feet and you're frozen too. Default to Hand Grenades unless you want what the others do.
The Magnum and Shotgun are temporary upgrades. Both burn through ammo and revert to the basic handgun the moment they run dry, so treat them as a clip you spend on tough enemies, not a permanent loadout. Body Armor works the same way: it makes Spartan invulnerable, but only for a few seconds. The reflex to grab it and fight carefully is wrong. Pick it up right before a section that's been killing you and sprint through that bit.
Medi Pack fills the whole health bar, Mini Pack fills part of it, and an Extra Life is exactly what it says. Infrared Goggles only matter in dim stages, and if the screen looks unreadable they're nearby and you should grab them.
How combat works
Spartan aims in eight directions and fires by holding the shoot button for continuous fire. That part is straightforward. Two parts aren't.
You only run and shoot if you started running first
If you stop, push the shoot button, and then try to move, Spartan plants his feet and stands still while bullets fly out. The strafing trick only works if you were already moving when you started firing. The muscle-memory rhythm in every combat encounter is: move first, fire second. Reverse the order and you eat damage standing in the open. Same principle for jumping. Never start firing in the air, you'll just land into whatever's shooting at you.
Reading enemies instead of aiming
You don't aim at enemies, you aim at where you think enemies are and read their flinches. A faint impact effect appears when you hit something. If you don't see it, you missed. Combine this with the rule above and most fights become a small ritual: start strafing, hold fire, watch for the flinch, adjust angle. It feels weird at first and gets fast after the first stage.
One more thing the manual won't tell you: touching enemies costs health, even at point-blank contact with no shots fired. So most fights come down to keeping distance and reading flinches. Out-DPSing the room rarely works, and walking backward while firing usually beats rolling forward through them.
The Parking Structure stage is a predictable level to practice the move-then-fire reflex on, and you can drop straight into it via the level select cheat above. Playing Demolition Man online in the browser keeps the retry loop short.
Platforming: what gets you killed
The platforming has more weird rules than the combat does, and the level design leans heavily on vertical sections where every drop matters.
Approach pitfalls walking, not running
Spartan moves fast, and "fast" here means he keeps sliding for half a step after you let go. If you run up to a ledge, you're going off it. Switch to walking the moment you can see a gap on screen. Same for narrow platforms. Committing to a sprint across them is asking to overshoot.
Drop, don't fall
Holding Down while standing at the edge of a ledge makes Spartan climb down instead of falling. He hangs from the edge and lets go on command, taking zero damage. This is the single most useful movement trick in the game and the one you'll forget the most. Falling from anywhere above a couple of body lengths chunks your health, and from higher it's instant. So whenever you're heading downward and there's any choice in the matter, use Down at the edge instead of walking off.
The roll is bait
Down + forward makes Spartan tuck-and-roll. It looks like a dodge but doesn't actually move you out of damage. The roll barely covers any distance. Treat it as a graphical option you'll occasionally trigger by accident, not a tool.
The other thing that hurts is visibility. Foreground pipes and pillars obscure parts of the playfield, and hazards sometimes blend into the background art. If you're getting killed by something you didn't see, that's the game, not you. The cheap fix is to inch forward in unfamiliar rooms and let the screen scroll a bit before committing.
Surviving the top-down hostage stages
The two overhead missions are short and aggressive. Enemies pour in from off-screen on a near-permanent loop, and the screen is busy enough that you'll lose health to things you don't see if you treat these stages like the side-scrolling ones.
Lock your aim
Holding both fire buttons at once locks Spartan's aim in whatever direction he's facing, so you can keep shooting at one corridor while strafing or backing up. This is the only setup where the fire-on-the-move feels reliable. Without the lock, you point where you walk, which means anytime an enemy comes from the side you have to stop and turn before firing again. The lock removes that pause.
Grenades go over walls
Throw grenades into rooms before you enter them. Top-down geometry means whole sets of enemies are queued up behind walls and around corners, and a Hand Grenade dropped at a doorway clears half a room before you commit. This is also the only stage type where Flame Grenades are worth keeping — once the floor is on fire, enemies running at the door eat damage on the way in.
Don't try to clear the room
Each top-down stage is laid out as a hostage hunt: find and free them to open the doors that lead out. The enemy stream never stops, so trying to clear the room is a losing fight. Move with intent: grab the hostage and head for the door without trying to clear what's between. The faster you treat these as escape rooms, the less damage you take.
One last warning. Bombs lying on the floor blend into the floor art, and brushing one costs a chunk of your health bar in a single hit. If a stage feels like it's chewing through health for no obvious reason, you're standing next to a bomb you can barely see. Slow down for a second and look at the textures right under Spartan.