Can and can not Crit list
One-Handed
Piercing Dash All charges can crit but secondary effect on gold charge cannot crit.
Blade Flurry All charges can crit with no exceptions.
Spirit Slash All normal to silver charges can't crit, last attack on gold charge is able to crit.
Shadow Clone: All clone attacks are able to crit.
Dodging Strike All charges can crit with no exceptions.
Two-Handed
Heroic Slam All charges up till gold can crit, on gold charge the 1st flurry of attacks can not crit but the final attack can.
Whirlslash Both normal and bronze charge crit on silver and gold charges only the last attack can crit.
Titan Throw All charges can crit with no exceptions.
Smash! On normal to silver charges only crits when initial target collides with another Gold charge can't crit at all.
Berserker Style All attacks are able to crit due to being basic attacks.
Fire Magic
Fireball All charges are able to crit with no exceptions.
Meteor All charges are able to crit with no exceptions (gold charge fire field seems to do nothing)
Flame Thrower All charges able to crit with no exceptions.
Ice Magic
Ice Spikes All charges able to crit with no exceptions.
Ice Nova No charges are able to crit
Frosty Friend No charges are able to crit
Earth Magic
Earth Spike All charges are able to crit with no exceptions.
Summon Plant All charges are able to crit with no exceptions.
Insect Swarm No charges are able to crit.
Air magic
Chain lightning No charges are able to crit.
Cloud Strike All charges are able to crit with no exceptions.
Static Touch No charges are able to crit.
Well there you go guys hope this helps
Did this all with 100% crit chance so it's pretty accurate.