Button 1: Attack/pick up item
Button 2: Jump
You can pick up a barrel by holding forward as you press 1, then 1 again to throw it. If a gun runs out of ammo, the next time you pick it up, you'll throw it. Holding Up during a combo will throw an enemy forward, and holding down during a combo will throw an enemy behind. Everyone has a Down, Up & 1 attack, that when timed right, hits multiple times(can be done during a grab, which ensures it connects with every hit. Mustapha's is good for attacking enemies behind him as well). 2, 1 jump attacks. 2, 1 at the highest point of the jump, will dive attack. Hannah and Mustapha can wall jump by pressing 2, then toward the wall(actual wall, not the edge of the screen) and 2. From the wall jump, it depends how high up your are when you press 1 as to whether you'll jump attack, or dive attack(at the highest point). You can run by double tapping any direction, and can freely change direction while running. While running, 1 attacks, and 2,1 jump attacks(you don't get enough height to dive attack). Walk into an enemy to grab. During a grab you have a 3 hit combo. During a grab press forward & 1, or away & 1, to throw the enemy in that direction. 1 & 2 simultaneously is the desperation attack(can be done during a grab). In multi-player, if one player stands their character just above the other players character, and they remain idle for a couple seconds, they'll perform a double team, glow, and temporarily be invincible.
This one also has guns for weapons, and I can't find info on which one did it first between this and The Punisher, as they both came out in April of '93(though GameFAQs lists Punisher as having come out in May). True to Capcom adapting a license to a beat 'em up video game in the '90's, this one can get a little gory, especially with the introduction to the 2nd boss. Evidently with enough points you can gain an extra life. If you continue after losing a credit, you'll come back in with a bazooka. Another unique aspect is the dinosaurs themselves. If they're orange, they'll attack everything on screen. If they're green, they'll leave everyone alone. Some enemies will disturb/harm dinosaurs while they're green, turning them orange. As part of the nature of the license, some bosses won't be beaten exactly when you think they will.
Anyone familiar with the license will recognize Jack Tenrec(the average character), Hannah Dundee(between fast and average), and Mustapha Cairo(the fast character), but for some strange reason Capcom decided to create Mess O'Bradovich(the strong character) specifically for this game. The reason I find this strange is that the license already had 3 main characters, and Capcom only made the cabinet 3 player.