I played only the coin-op version as a kid, so I never played competitively with other humans (the two-player version is more cooperative than competitive). It's a very different game against humans!
A suggestion: when you kill someone, you receive the points that they had (min 1). Have each player's point total hover around their sprite. This would set a higher bounty on the better/luckier players and balance the gameplay a little.
A suggestion: when you kill someone, you receive the points that they had (min 1). Have each player's point total hover around their sprite. This would set a higher bounty on the better/luckier players and balance the gameplay a little.