palm strikes, elbows, kick/knees in the nuts. that's it.
Every martial art should require their students to break slates with their fists so they don't end up scared to punch someone's face or worry about sufficient wrist protection when buying gloves.
people who break there hands are people who are used to punching with gloves.good Karate guys never break there hand because they dont train with gloves and always make contact with the first 2 knuckles.
if you hit with the first 2 knuckles you wont break your hand.
thats quite a bold statement. didnt machida break his hand in the first shogun fight? haha
Kicking is fine if youre good at them. You have shoes on though, stay far away and use them. Use a straight or side kick to the head, if he gets you down he probably doesnt know how to escape bjj subs so just worry about not hitting your head on the way down. Kicks have danger, but they fucking hurt and you can stay far- its worth the risk if your fast enough.
As far as punches, without gloves Id rather save fists for the beginning or finishing him, the hand is precious and if you can prevent breaking them why not? If its a long fight and you save your fists till the end theyll be so fresh.