Tom Clancy's Splinter Cell: Conviction/P.E.C. Challenges

Persistent Elite Creation Challenges, or P.E.C Challenges, are a way to earn points for upgrading your character and weapons. The challenges are separated into three broad groups, each of which focuses on a different area of Sam Fisher's expertise.

Death From Above
Drop from a ledge or higher platform onto an enemy to take them out.

Grab From Ledge
Pull an enemy down from a ledge above you.

5x Predator
Neutralize 5 enemies in a row without being detected.

Stealth Headshot
Neutralize an enemy with a headshot without alerting other enemies.

Mark Proficiency
Neutralize at least 2 enemies in a single Mark & Execute.

3x Frag Grenade
Neutralize 3 enemies at the same time with a single frag grenade.

Remote Explosion
Neutralize at least 3 enemies by detonating a remote explosion gadget.

Stunned
Neutralize an enemy who is stunned by a flashbang or EMP gadget.

Behind Closed Doors
Use mirror or snake camera to mark an enemy, then neutralize him.

Sonar Mark
Use the sonar goggles to mark an enemy, then neutralize him.

Shadow Takedown
Perform hand to hand takedowns in the shadows without alerting other enemies.

Sticky Camera Whistle
Make noise with the sticky camera to attract an enemy, an neutralize him.