Glitches
- If you go all the way to the end of the level, and stand under the overhang, there is a glitch where you can never get hit. What you do is you stand under the overhang, but don't touch the wall on the left hand side. Next hold the left button down, and just as the soldier touches the wall, hold down the "down" key. Keep the down key pressed in order to remain crouching, this will make you un-hittable. From there, you can fire the Rail Gun, the Grapple Cannon, the A-Bomb launcher, Shotgun Rockets, and Grenades. You can also shoot the Seeker Launcher if you are careful to shoot it at an angle such that it doesn't run directly into the overhang. To get out, simply press down (to go on top of the overhang) or press left to go below the overhang. You can also use the hyperjump.
- Occasionally when a heli flies off and returns, it will be entered in the tally at the top of the screen as having been killed. However, you will get no points for this "kill." It is unknown whether this affects when you get the next Health Pack.
- If you get the bonus pack "Invulnerable", you cannot use health packs even though they are dropped from helis, no matter how many helis you kill.
- In Internet Explorer, click and hold the left mouse button down and drag off the game screen (and then let go of the mouse button). If done correctly the 'gun' you have will continually shoot without the need to hold down the mouse button. If the mouse button is re-clicked the gun will stop shooting or you click (left) and hold and than click (right).
- If you get a kill that results in a weapon crate being dropped on the top-right of the map, the crate will sometimes become lodged in an invisible crevice. You can reach this crevice by hyperjumping, however.
- You can get a score of -1 which is counted as the highest score in the high score list, though it is not known how to do this.
- If you shoot an A-Bomb upwards while in the overhang, you will become lodged in the ground.
Read more about this topic: Heli Attack 2