I'm not saying skip a level on easy or normal, I'm talking about hardest and inferno. If you started on easy it should be easy to complete and all levels will be unlocked.
I'm pretty sure once you complete the first levels on easy they are unlocked and you just choose the difficulty on any level you want.
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quote AngelDeVoid

Yeah I've noticed that too with the weapons. I keep getting the same weapon over and over, and when I do get a new weapon, its useless at the time.

I really hope some of the weapons you get at the harder levels are insane and do massive amount of damage.

If your having trouble w/ a Level, pass it and move to the next one, it might be a little easier and you might get a better weapon.

My friend and I must have passed 6 levels and gone to build our health at least 8 different times.

I said this b4, if you don't have a 2nd player you won't get very far in hard and inferno missions. You could build your health up to an insane amount, maybe 80,000, take a strong bomb and run to the middle, get swarmed and BOOM! that area is pretty clear and use ZE guns to clean it up.
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I don't know about playing the early levels so much b4 moving on. I'd start at Level 53 and work my way up and play each stage 2 or 3 times, making sure I picked everything up.

Most likely you'll get the final models of the weapons later in the game. Besides, while going through the difficulties, I noticed that we didn't start getting new weapons until Level 20 or so.
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I ended up going back to some of the earlier levels and playing through them on Hard. I was able to get a more powerful rocket launch (230 dmg, with 3 loaded and an assault rifle with 3 round burst with 40 dmg), so it was a lot easier. Plus my guy's health was around 200 points higher, so that helped as well.

The best thing I've noticed so far is that its a good idea to go back and do the levels on a harder setting, and hope for better weapons, and get that extra health.

I love that fact that for many of these mission, I end up being alone and going "Rambo" and coming out fairly unharmed.
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hey there hope this helps a bit

mission 15: BLOCKADE

the walking fortress is not the target on this one, all the robots that fly out of it are.

the fortress has several weak points that you can shoot.
1.) the ROTATING ANTENA (near the middle/ belly)
2.) the LASER TURRETS (obvious after they start firing)
3.) the SPAWNING PORTAL (the chest plate that drops things)

now the portal becomes a target in latter missions, but right now just shoot down all the ROBOT SHIPS AND WALKERS.


RECOMENDED WEAPONS:



PRIMARY:
ASSUALT RIFLE: any as long as it shoots straight

SECONDARY:
SNIPER RIFLE: high power, w/ decent ammo
ROCKET LAUNCHER: high power and shoots straight
MISSILE: only if prefered



ENEMY WEAK POINTS:

WALKERS:

ASSAULT RIFLE: multiple shots cause them to miss-fire and can take them easy.

SNIPER RIFLE: if the rifle has ARMOR PIERCING you can get 2 in one shot

MISSILE: if your health is low use any with B+ to S homing



ROBOT SHIPS:

ASSAULT RIFLE: BEST WAY TO TAKE THEM OUT

MISSILE: if your health is low use any with B+ to S homing




HOPE THIS HELPS YOU ANY!

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