From SDA Knowledge Base
Your movement speed is affected by the weapon you're carrying. It's currently unknown if each weapon has its own weight, but there are at least three weight classes:
Weapon of choice
- Unarmed is the primary attack choice since you move at full speed and most standard enemies die in one-two punches.
- Kicks kill any unarmored enemy in one hit which is the fastest method of killing Shades and clearing enemies blocking a door.
- Shotgun is the best weapon overall, killing standard enemies in one shot from mid-range and Heavy Armors in four head shots.
- Penetrator is primarily used to kill Nightmares because of its high accuracy from long distance and high attack rate.
- Proximity Mines are very useful against mechs because of their 100% armor penetration, as is the Rocket Launcher.
On Low difficulty, enemies deal 25% damage and their A.I. (tactics/aim) is 50% effective. You also regenerate health up to 40 hit points after not having taken damage for a short time.
Useful cheat codes
god - God mode
guns - All weapons
tears - No ammo consumption
maphole - Next level
health - Full health
armor - Full armor
Grab the top of a ladder and press jump to glitch the climbing animation into happening where you stand, making it possible to climb through the ground. Primary method of getting out of bounds. If you are in floating mode while performing this glitch you can repeat the climbing animation to climb even further down or even to the sides. To do this, bind crouch to the scroll-wheel and crouch once every time you want to repeat the animation. Works on version 1.00.
If you holster your weapon or swap to another weapon and then pull it back out, its ammo clip will be full without having to reload. Works on version 1.04 and lower.
Press and hold jump, then spam crouch and use anywhere on a ladder. Sooner or later you will glitch into floating mode, which lets you float anywhere horizontally, as well as sink by repeatedly crouching. You're not able to jump while floating so you will have to ascend using sloped ground or objects. To regain the ability to jump, save and load the game. Used in conjunction with the ladder glitch to be able to float out of bounds. Works on any version.
Most decorative objects are solid, meaning you can stand and jump off of them. By using explosives or firing at them while having slow-motion activated, you'll be able to boost yourself to great heights. However, if the object is moving too fast then you won't be able to jump on it, you'll just clip through. This means that most smaller objects are not suitable since their weight is so light, meaning they will traverse much quicker than for example cardboard boxes or trash cans. Works on any version.
You can move at running speed in areas where you normally only can fit by crouching (like vent shafts). Bind crouch to the scroll-wheel and run up to the place you want to crouch through, then scroll one step with the scroll-wheel while holding forward and you'll be in crouch glitch mode until you stand up again. Works on any version.
You can cancel out the punching animation by crouching after the attack, therefore being able to perform multiple punches in a very short time span. Works on any version.
Normally you're only able to stand on people's heads without being able to jump from them. A way around that is to first glitch into them by simply walking at the right angle, then spamming jump. At some point the game throws you out of the person you glitched into with a full jump. Works on any version.
You can climb certain types of walls in the same manner you can climb people, but it only works for a few walls. The climbing speed is also related to how fast the game runs, some walls are climbed faster on high fps while others are climbed faster on low. Works on any version.
You can clip into most objects which have non-blocked corners. Stand on one of the corners and start spamming crouch. If you positioned yourself correctly, you should fall through the object. Now jump and crouch repeatedly towards the object and with some luck you'll be able to move freely within the object. If you simply start running around after just spamming crouch at the corner, you'll get ejected. Also note that the object must be tall enough to be able to jump crouch into it. Works on any version.
Extraction Point runs on version 1.07 and Perseus Mandate on version 1.08. They introduce the ability to bash down doors which is slightly faster than simply opening them for certain doors.