Defeat Tank at The End:
C-12 Final Resistance
The easiest way of destroying alien tank at the end of the first level is to just charge straight at it. Fire as much as you can while targeting it. If you run out of ammunition, take out your blade and kill a nearby Borg. Once it explodes, kill the remaining Borgs to win.
When The gantry collapses and you turn on the power, the electric cable nearby will electrify the gantry. When you attempt to cross, you will get hurt, and it is your only way back. So, face the burning trucks and press R2 to change to first person view. Scroll left, look at the top of the building, and shoot out the electrical box. This will cut off the electricity on the gantry.
When you get to the door, go left and kill all the aliens and bugs in that place. Use the gun turret up the top to have an advantage. Once you have killed them all, one will drop an alien key. Pick it up and open the gate. The resistance soldiers will now give you some explosives.
When you reach the door, save and go the other way (opposite from where you go for the explosives). Blow the sniper out from his hiding place and keep going. Take a left turn and run down the ramp. Kill the aliens and you will see yourself talking to the resistance soldiers. Go downstairs and kill all the enemies. Kill the alien and he will drop an alien keycard. Go towards the next ramp and press the switch. It will show the alien gate being turned off. Go through. You need to use stealth. If any of the drones spot you, the gate will be turned on again. Once you are through that room, run up to the alien gate and use the Alien keycard. This will free the resistance soldiers and they will give you the detonator.
Information in this section was contributed by PrinceFang.
Thanks to Revolution reader James!