How do you beat the last level on Raze 2

To kill all the dudes named "human", you have to bye the Acid Hound, the Acid Hound is 5,000 credits. But to kill Raze Soldier faster, you have to bye the assault bouncer, the Assault Bouncer costs 2,600 credits, its because Raze Soldier is turning into a zombie, and hes getting dryer skin, the dryer skin, the better he burns. Surprisingly, the flamethrower is not a good choice for this level. Weopons not to use on this level: Flame Thrower, Plasma Pistol, Burst Torch, Zapper, Particle Cannon, Bubble Blaster, Hail Storm, .50 Caliber Sniper, Shredder and Ice Hunter. Weapons to use: Ripper, Vamp Charger, Photon Blaster, Magnum, Shotgun, Terminator, Assault Bouncer, Precision Laser, Electro Bolt, Holy Grail, Pulsator, Destroyer,m Focus Beam, Acid Hound, Grenade Launcher, Ion Cannon, Rocket Launcher.