I enjoyed the game.I think you should add 'how many enemys are left in this zone'.
drop weapons with less ammo so you can use diffrent weapons or to buy "paradrop" ammo or solgers to fight with you.remove enemys withaut guns it looks stupid.
Add bosses, add tanks ,add planes, add heliopters ,add armored siut enemys!!!
Pls the p90 has 50 ammo a clip not 20.