I found this on Reddit; (the post is over 2 months old so i would assume it is accurate).
http://www.reddit.com/r/Battlefield/com ... signments/
Disinformation - Unlocks the DS-3 gadget
Get 3 melee kills
Get 10 kills with shotguns
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Eye Spy - Unlocks TDD attachment
Get 2 spotting ribbons
Get 20 DMR or Carbine kills
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XD-1 Deathbringer - Unlocks XD-1 Dog Tag
Get 30 kills with the XD-1
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Snowmobile Slayer - Unlocks Snowmobile Dog Tag
Spend 15 minutes on a Snowmobile
Get 10 Roadkills with the Snowmobile
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Hover Tank Harbinger - Unlocks the HT-95 Dog Tag
Spend 10 minutes in the HT-95
Destroy 15 vehicles in the HT-95
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Railgun Rampage - Unlocks Rorsch X1 Dog Tag
Destroy 10 vehicles with the Rorsch X1
Get 25 kills with the Rorsch X1
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Mechanized Mayhem - Unlocks the Tundra weapon and vehicle camo
Get 25 kills with the SC-42
Destroy 10 vehicles with the SC-42
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Frostbite - Unlocks the Frostbite weapon and vehicle camo
Play 10 hours of Final Stand
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Ultimate Assault - Unlocks the Ultimate Assault Dog Tag
Get 200 kills with Assault Rifles
Get 50 kills with gadget Grenade Launchers
Perform 100 heals
Revive 50 allies
Kill 10 enemies with the Defibrillator
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Ultimate Engineer - Unlocks the Ultimate Engineer Dog Tag
Get 200 kills with PDWs
Get 100 kills with Rocket Launchers
Destroy 50 Vehicles with Rocket Launchers
Destroy 50 Vehicles with Mines
Perform 100 repairs
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Ultimate Support - Unlocks the Ultimate Support Dog Tag
Get 200 kills with LMGs
Get 50 XM25 kills
Get 50 kills with C4 or Claymores
Get 50 kills with Mortar or UCAV
Perform 100 resupplies
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Ultimate Recon - Unlocks the Ultimate Recon Dog Tag
Get 200 kills with Sniper Rifles
Get 50 kills with C4 or Claymores
Spot 100 targets with the MAV or SUAV
Paint 25 vehicles
Get 25 Motion Sensor Assists
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Ultimate Commander - Unlocks the Ultimate Commander Dog Tag
Get 100 Scan Assists
Get 100 Emp Assists
Promote 75 Squads
Get 50 Ammo Drops used
Get 25 Vehicle Drops used
Final Stand Equipment List - DS-3 Decoy Grenade - An experimental device designed to hack the enemy communication network. Once active, the DS-3 will report a false positive infantry signal on the opposing team's minimap. C100 Knife Bipod - Your very own bipod knife, no bucket required. Rumored to be the favorite weapon of the greatest soldier on the battlefield. Tanto - A heavy tanto style blade. The angled tip excels at puncturing hard targets. Use it to steal dog tags from your enemy. Weaver - Forged using experimental 3D weave technology. Use it to steal an opponent's dog tags. HT-95 Hover Tank - Uses stacked charge technology to fire multiple rounds.SC-42 Snowmobile. MKV - An experimental combat drone. Use to spot and engage light targets from the air. This device will self-destruct when it runs out of fuel to prevent recovery by the enemy. Railgun - For safe handling of this experimental weapon it does not actively store its full charge. Once engaged, it takes a second to build up energy before discharging a heavy sabot round at extreme velocity. The operator must manually track moving targets during this charge time. Spyder - The signature weapon of Phantom Program soldiers given to members who have completed their initiation. It's short effective range shouldn't pose a problem for a true Phantom Operative.