Temporary R1-10 strategy:

R5 (start) || open office

R5 - R9 || P1 and P2 defend alley, P3 and P4 defend office

R5 (end) || corner alley

R10 || Open hotel, apartments, power, roof top. corner power station

R10 - R14 || Form 2 groups. P1 and P2 defends alley, P3 and P4 defends power station.

R15 || Open garden (or earlier). Camp at garden only this round.

R16 - R24 || Form 2 groups. P1 and P2 defends alley, P3 and P4 defends power station

R25 - R29 || Get in the corners (and make sure you have fast revive by now). P1 will explain the alley corner. P3 and P4 corner power station (left from the power switch)

R30 || power station get ammo (end R29), everyone corner at hotel chairs.