I remember in one stage you had to swim, but that was taken out. There's still elements of puzzle solving in there. Things like climbing and moving objects are present. Buttons are pretty much the same as other MK games, with high and low punches and kicks with a block button. No jumping though.
Additional buttons are the special move button, look button, and pull weapon button.
You have combos, special moves, and a good supply of weapons to collect. Sniper mode comes in handy. Blocking doesn't protect you much. I thought perhaps Jax would be able to reduce the damage of bullets with his metal arms, but guess not. A few of the combos are cool, such as the one where he ends up lifting you and shocking you.