Always tried to make one of these, and always failed at it... Let me know if this one's any better
Construction Droid
Cost: 23
HP: 60
Defense: 18
Attack: 8
Damage: 30
Droid
Melee Attack
Heavy Lift
Demolition - Replaces attacks; any adjacent doors, difficult terrain, or low objects are removed from the battle grid for the rest of the skirmish.
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Sort of like a T1, but less beefy and with the added ability to level any obstructing terrain in its path.
May also attack and move at the same time, but probably wont be the best droid attacker out there.