Alright, a lot of people are confused on some of the features in this and how to do certain actions. I'm going to quickly cover majority of the most confusing ones, so if you have a question on how to do something, this would be a good place to go.

1. How do I use the Oozaru/Great Ape form?
Put the Saiyan tail on a humanoid, then use Vegeta's Powerball attack in the air. It might take a few tries, but eventually it shouldn't explode and instead turn into a moon. When this happens, anyone with a Saiyan tail (should) turn into a Great Ape. If this doesn't occur, try redoing the launch of the Powerball until it succeeds. Sadly, the only way to get the Oozaru form is by Vegeta's Powerball at the moment, although this will hopefully change in the future

2. How do I use Goku's Kaioken?
Kaioken is activated on Goku by specific controls on his head and upper chest. Activating his head will enable Kaioken, activating his upper chest will increase the multiplier on Kaioken. This means the reduction of health rate(yes, Kaioken does slowly hurt Goku) and his power will both increase.

3. How to use ki attacks?
Right click on the arm you want to use a ki attack on. Scroll until you see "Change Ki Technique" and click on it. You will see 2-3 options, choose the one you want and try firing the attack. Some ki attacks need to be charged, meaning you would hold F until the energy ball stops growing in size. The exception to this rule is Piccolo's Special Beam Cannon, which can be charged as short or as long as you want to either decrease or increase the power of the attack

4. How to increase the power of non-DBM mods/how to use the Dragon Balls?
You can find the dragon balls across the maps you play on, collect all seven and put them next to each other(Be warned, the Dragon Balls can spawn inside map blocks and can even be on the brink of invisible.), then press F on the Dragon Ball with one star. This will summon Shenron, who will grant you a wish. Click the right arrow until you see "Boost the Targets Power Level". Select that option, then click on the head of the character who you want to become stronger. This will double any creature's power level, so you will have to repeat this a few times to bring a regular human to the likes of Goku. Luckily, the Dragon Ball don't move after being used, meaning you simply wait until they turn back to normal after being turned to stone to increase the creatures power level again.