ok so, I drew a concept map.
perks:
hp(top right): price is 1500, it increases your hp from 3 hits to 5.
speed(bottom right): price is 1500, increases speed by a certian amount.
rate(bottom left): price is 1000, increase rate of fire on all weapons
note: if you get downed, you have to rebuy perks.
nades: cost 75 coins for 5 more nades.
1-5 are the drop spots of ammo
there is weapon buyong spots scattered all over the map.
you do gfx, right rot? how about me and you make it... I can make he gmap and develop it and you can design anything we need... then they can't say no, especially if all that would be left is scripting. (I can get 99 to help).