Not bad, nowhere as good as the second one but that's how it's supposed to be I guess, lol.
Once you quit the game, at least in the Newgrounds Player, your save file seems to get erased. Lame.
I've only ever struggled with dynasty, ninja, and vortigon (final boss) because their A.I is way too OP. Especially vortigon who reacts to very deadly map changes INSTANTLY which is quite bs (Yipee more RNG bs btw). Trying to fist fight harder A.I is ridiculous they always seem to stun you when jumping and break out of "combos" you deal to them way too easily, they also know what happens offscreen perfectly while the player does not. The game in general is just way too fast paced, like you need to be on crack to be able to react as fast as hardest A.I. Ultimately most fights boil down to if a fucking crate with a good weapon/power up just basically spawn on top of you or the enemy, which it did a sh1t ton on my vortigon fights, otherwise I would've beaten him in like my third or fourth attempt. (RNG wohoo)
The game should've also had a tutorial where they tell you how to do different "attacks/combos". I didn't even realize you could do a "move kick attack" and "air kick" until the dynasty and aztec guy fight respectively.
Can't say the game aged like milk, but it's not that great either. Fun for about 15-30 minutes until you're forced to fight ridiculous cracked out A.I's with RNG crates/power ups.