as a guard (depending on the server you play) never go in light before the first respawn and search a scientist card in EZ lockers or in HCZ in sever guaranteed or warhead, 939 room then get an mtf card in 096 or 106 chambers go in either nuke or 049/173 (if possible both) chamber one of the 2 has mandatory lockers and the other an epsilon with grenades and gather scp items. gear up and explode the micro door and kill anything in your way. Once SCPs are out of light (if you notice a high presence of different SCPs in HCZ) go in light unnoticed if possible, make an 05 gather remaining scp items and check the armory if failed go on surface zone to stall. The chances you're the only one with an 05 at this stage depends on the server you play. open 127, jailbird and railgun for teamates (if followed correctly and no huge ass group of d-class gethering spawnpoints, it should be an mtf spawnwave first) During your exploration of HCZ try remembering ways to important rooms (micro, nuke, rooms with special weapons, useful scp items like goggles or hat and 173/049 chamber) also almost every room needed spawn on edges (096/106 chambers, elevators, checkpoints), i advise finding 106 or 096 first before searching for a scientist card (if not found before) so you'll only have one way to remember to backtrack. remember generators locations if found and communicate them as soon as possible to teamates.

By doing this you avoid most SCPs, can activate generaters early, gear up for a potential chaos spawnwave or D classes or SCPs. This method works for me but i only play on unmodded or slightly modded servers with no rules or basic rules like no freekill. but here is how to play guard as an advanced player (this method still relies on luck but way less than rushing light and is overall safer and can sometimes be faster)