V.A.T.S.:
To survey the area around you for foes you missed, hit the VATS button repeatedly as you make your character spin.
Continuous Hacking:
You have 4 attempts to hack successfully. Try 3 times, bail out, then try again; repeat this process.
More Space:
When running out of inventory space, find a companion character to help you.
Behemoth Locations:
Can be located in: Evergreen Mills, Galaxy News Radio, Jury Station, Takoma Industrial, and The Capitol Building.
Locating Dogmeat:
Go to the Scrapyard, northeast from Megaton, over the river, where you’ll find the dog.
Unlimited Good Karma:
Outside
the towns of Rivet City and Megaton, you can locate parched people who
ask you for filtered water; give them it to increase your karma.
Avoid Breaking Bobby Pins:
Be
patient when picking locks; after a 3rd attempt, the pin may break, so
back out after the 2nd try and go back to reset the pin strength.