Jumping from building top to building top may increase this skill faster. To increase Acrobatics, jump as you are traveling. After it fires, it will not count that arrow to be missing. Enter the inventory screen with the arrow still pulled back. This also works with Keening, but it raises Speed, Agility, Health, and Willpower. This will raise the stats of Strength, Endurance, and Luck by at least 90 points at a time. Hold X + L to switch between the Sunder and the other weapon. Equip any weapon, and make sure you have the Wraith Guard on. To raise all stats, Strength, Endurance, and Luck, all you need is Wraith Guard and Sunder. To continue boosting your stats, simply re-do the spells and hold the appropriate buttons your controller. You can do this as many times as desired until the spell expires. As they switch, the stats associated with each type of weapon will rise tremendously. Once all of them are active, hold X + L and watch the weapons switch out rapidly. Cast all of the bound "weapon" spells one after another.
Depending on how much magicka you have, you may have to enable the "Change magicka level" code to ensure your magicka continues to rise as you cast the spells. (one of each bound-type in your magic list). Make sure you have a spell that raises long blade, short blade, blunt weapon, etc. First, acquire all bound "weapon" spells that cover the weapon stats. Note: The boost is the same as previous methods mentioned the only exception is that you are activating all of the bound spells for each weapon at one time, then pressing the appropriate trigger buttons and holding them throughout. Use the following trick to boost all your weapon stats, with the exception of Hand-to-Hand.
For example, start filling your health/magicka/fatigue, and press B before it is to the top, While still holding A and filling it, it will keep and always be full until you return to the menu. It will continue to rise and as it goes down, it will raise back up instantly.
Press L or R to switch to the stats screen. While playing a game, press B to enter the inventory screen. Highlight "Magicka" and press Black, White(2), Black, White then hold A until the desired magicka level is reached. Highlight "Health" and press Black, White, Black(3), then hold A until the desired health level is reached.