I have found a bug, when I restart the game using the space key instead of clicking the Play Again button 3-4 times out of 10 the game starts but the craft's speed is very slow. I usually refresh the page to get the normal speed back again.
Immobilised/limb cut gladiators should suffer severe strength/dexterity/defense/speed reductions for the duration of the battle. Currently the chance to hit a limb doesn't change even when the target is immobile. Similarly, I don't think that a gladiator would be so great at throwing javelins at me while jumping on his remaining leg and bleeding heavily
You should get a chance to reassign your skill points at least once. I started playing and levelled up quite quickly to level 3 and I chose my skills based on what I thought is the best and not considering the weapon requirements. Then I found out about the shop, but I'm already stuck on level 3 with 1 accuracy, 1 health and 1 defense which allows for a basic submachinegun. I got level 4 guys killing me instantly with AKs and I have no chance to get one myself until I reach level 6 which to be honest seems very far away given the exp it takes to level up on higher levels - which is another thing that could be addressed btw.
Looks like thes "async" games run into similar server issues after a while. Remember the brilliant async racing? Havent been able to play the game for months :( http://www.kongregate.com/games/DJStatika/async-racing