The game is quite dull and buggy.
The best tactics here is to take your knife (or 5lvl pistol) and mow down WHOLE area by just walking here and there; the only 'but' is that you shouldn't be on their 'fire line' (they don't know melee attacks are spread at wide area) - and you're the arena champion. Same method is suitable for single bosses, but if you fight him one-by-one, it gets ever funnier, because you just need to walk up and down while swinging knife/shooting kampfpistole.
Another aspect is bugs. I found at least three of them. First, five lvl equipment purchases aren't showed anyhow, excepting the picture in the small display: first it still says '4/5; cost: 400$', but on next launch it will say '1/6; cost: 1000$'. Second, arena selection. I could unlock only 4 out of 7 areas and after completing the 4th, it's still 4/7. The third thing to fix is a weapon selection. First, weapon set is ALWAYS being reset to default 1lvl knife and 2 1lvl pistols (guy, you have a rifle! or you haven't?), but it's okay, I guess. Second, NO MATTER what weapon DID you select, during the battle you WILL HAVE the SAME weapon as you HAD LAST TIME (till the first shot). Third (and the most annoying one), you CAN'T select 5LVL KNIFE! Seriously. No, you CAN select it, but you CAN'T start battle with THIS knife. Though, it doesn't affect other upgrades, but whatever.
So, the game has a LOAD to grow.
I hope, this post won't abuse author. That's all.
