Is this type of bruising normal for Kybella? (photos)

Brusising is common with any injectable. Although yours looks worse than the norm, every patient is different. In terms of your results, it takes anywhere from 6-10 weeks. It's possible that you will need another treatment. It really depends on the amount of fat that needs to be dissolved. Have your injector show you your "before" photos. My guess is that there has been more improvement than you realize. 

Thank you for your question and for sharing your photos.  Unfortunately, there is a risk of bruising with every cosmetic injection.  Kybella often involves 20-40 individual injections in a single session, and so bruising is not uncommon after treatment.  It's difficult to predict who will bruise, and where they will bruise with a treatment.  That said, you appear to have a little more bruising than I usually see after Kybella.  It may be worthwhile to follow-up with your injector to discuss your concerns - sometimes, lasers can be used to help bruises fade much faster.
In general I find that results from Kybella take at least 6-8 weeks to become visible, and continue to improve up to 10-12 weeks out.  Best of luck!