Hey guys, new to the forums but here to help since I main Wolf and have been playing P:M a lot recently. I agree with his side-b being his main kill move, but I suggest working around that since
1. It can be very dangerous when preformed, especially if it ends off stage
2. It's very easy to DI away from players expecting it
3. If missed, it's easily punishable
with that said I still suggest using it since it's ****ing cool and it's probably one of the prettiest looking moves to pull off after a combo. Wolf can easily pull off juggle combos with his dash attack, and his air game is incredible, to the point where I can outrange my friends Marth main when I time it correctly. His only downsides are his Uair and Nair. Nair because it has absolutely no knockback, and if you don't L-cancel it you're getting smashed, but if you are really good with L-canceling a Nair can lead to a double shine into a side-b. His Uair only kills at very high percentages, besides that it only sends opponents way high and out of reach which is something you don't want as Wolf. His F-smash is ****ING AMAZING because of its incredible reach, and with a quick wavedash out wavedash back in you can smash someone from around 60%+ at the very edge of the stage after they recover. His U-Smash is great too as in low percentage it keeps your opponent near you and its almost impossible to pull a good DI from Wolf's U-Smash since it usually keeps them low, it also has decent kill potential at mid to high percents.
His flash has so many setups it isn't even fair. A badly DI'd back throw will always be the easiest way to pull the flash off at around 40%+ and is almost always a guaranteed kill. A couple of dash juggles into a Bair will give you the same setup, and my personal favorite is the double shine Bair or Fair into side-b. Thats basically what you need to know about his kill moves, save the obvious Dair meteor smash. Hope I helped.
EDIT: Sadly I haven't gotten the timing down to shorten his flash, but all the combos I mentioned are done at full flash range.