Having trouble? Getting frustrated?
Here is a few tips that may save you some grief.
#1. RUN! If you cant beat em, run from them...you don't need to kill EVERYONE. Stay on the road least traveled and rune to the next check point.
#2. SNIPE! Hang back in the cut, shoot from a distance, wait for those head shots and conserve that ammo. use the DMR and pistol they are your friends. KEEP YOUR DISTANCE.
#3. BAIT! use the HOLOGRAM he/she will be your BFF! Bait out the enemy and get those head shots. You can also use this AA to make a dash though to the next area, have em run at your attackers while you run for the exit.
#4 ARM AI! give those dumb AI's Weapons for dummies i.e. Rockets, snip, or any power weapon because they'll get infinite ammo....unlike you.
#5 BACK TRACK! if you are running low on health or ammo head back to your last EPIC battle and loot. This is extremely helpful and my save your life.
These are the tips you should live by if you are ever to beat the game by yourself. RUN!,SNIP,BAIT,ARM AI and BACK TRACK!!