1. punch small medium large 2. kick small medium large
3. attack small medium large
4. hit (you’re being hit) small medium large
5. death small medium large
The above is a good example of something you’ll encounter quite a bit in video games because video games are generally chock full of action. Imagine what kind of sounds you’d make in the given situations. Mix it up a little and try a variety of sounds like hy-ah, ki, shah, rah, gar, huh, for example. Try the same sounds with different types of efforts to see how they come out. Experiment with different lengths of efforts. Often in a video game session they will ask for a small, medium and large version of each fight sound. Imagine the difference between getting your earlobe flicked, getting punched in the face and getting decked with a sledgehammer. A good imagination will bring variety and directors really like variety. Give ‘em what they want and they’ll call you again.
Try to make sure you are generating the sound from good diaphragmatic support and not uncomfortably constricting your throat to create the sound. Straining your throat can put a lot of pressure on your vocal cords and could damage your voice.
Another great (and inexpensive) way to practice is to mimic things you hear. Listen to your favorite radio station and simply mimic the DJ’s, the commercial announcers, even the newscasters. Not only will this clue you in to the types of voices that are booking work, but you’ll often come up with new and exciting voices just by trying to mimic someone else’s.