Disarm or arm trap
Fade into background: The thief blends in with the surroundings and may make a single move without being seen or heard.
Back stab: The thief must be to the side or rear of the target, roll to hit ONCE as normal and then roll again for the back stab attempt, If the backs stab is successful then damage is equal to the WS of the thief, with no saving throw.
Dodge: This skill is used to dodge an attack. If a successful attack is made, the thief may elect to attempt to dodge away at the last moment. If cornered, this may be a better option than relying on armour.
Pick locks: A thief may attempt to pick a lock. If they fail, they may try again in following turns but their BS is reduced by 1, on each consecutive attempt. No movement may be undertaken in the turn this ability is used.
Disarm or arm trap: This allows the thief to disarm a trap that they are aware of, or re-arm a trap already disarmed after the party has passed it safely. Nome movement may be undertaken in the turn this skill is used.
Locate trap: The thief will be able to locate any traps within 6 inches. No movement may be undertaken in the turn this skill is used.
Secure grapnel: This allows a thief to firmly set a rope and grapnel in place to allow other party members to climb a vertical surface, making a test as if they were a thief climbing a sheer surface. A thief using a grapnel may climb making a single test failing only on a 1 for the duration of the climb.
A thief may attempt any of the above once per turn but may not perform a normal melee or ranged attack (back stab is the exception as a normal attack is made, then a test to see if the back stab attempt is successful) . Test against weapon skill. Thief skills may be used at any point in a turn unless otherwise noted.
Thieves may only use light armour, and no shields.