You are a changeling!

1. Your goal is to absorb the DNA of a certain amount of crew members. Use the Notes verb to view the exact amount.

2. Changeling aliens have a number of powers to take down their victims and protect themselves.
Using some of the powers requires you to expend some DNA points.
To acquire more, you will have to absorb new victims. Any living victim that you absorb will be forced into your hivemind. Absorb DNA, to steal the DNA of your victims. They must be grabbed firmly.
Toxic Spit, a homing projectile that instantly melts the victim's headgear.
Hallucinogenic Sting, a stealthy sting that makes people trip.
On the non-RP servers, Neurotoxic Sting, stealthily KOs your victims in about 30 seconds. Also causes severe brain damage.
On the RP servers, Capulettium Sting, which doesn't cause brain damage, but will make your victim appear dead while they're unconscious.
DNA Sting, forces somebody to assume the appearance and name of one of your victims.
Lesser Form, instantly transforms you into a monkey. Only some abilities are available while in this form. Use the command again to revert to a human body.
Regenerative Stasis, you will appear dead, and slowly return to full health. You won't be able to move while in stasis.
Speed Regenerate, heals you on the move and regrows limbs. Very obvious, will expose your alien nature to anyone nearby.
Transform, lets you transform into one of the identities you have absorbed.
Mimic Voice, to speak in the voice of other crew members.
Speak to Hivemind, to telepathically speak with those that you have collected into your hivemind.
Handspider, to transfer a consciousness from your hivemind into a weak scouting critter.
Eyespider, to transfer a consciousness from your hivemind into a weaker critter able to see everything.
Morph Arm, to temporarily replace one of your human arms with a stronger form.
Horror Form, you turn into a shambling abomination with a special set of abilities. See the the wiki.
Changelings don't need to breathe, so they can enter space without a spacesuit or internals.

3. To absorb a human's DNA:
1. Set your intent to GRAB.
2. Click on your victim until you hold them in a grab.
3. Click on the grab button until it reads KILL. Headgear will stop you, so make sure your victim has none.
4. Now you can use the Absorb DNA command.

If you are interrupted while absorbing a body, the process can be restarted once you return to safety.

For more information, consult the wiki