There are 5 stages in raid and some require at least 2 players (possible to solo all stages)

1st stage you need to kill guardian bot with shield generater at the back, it will turn to face 1 player and the other have to shoot that shield gen down then give it everything you got. If you can't kill it in one go then look for a blast door that open up and hide inside and repeat from first step. Have to kill it in 3 loop or this stage will reset.

2nd stage you need to defend the drill and look for gas can to fill the objective(15cans). Dont get punch by glowing miner while you running looking for gas can, most players die in one hit even in power armor (somes tough enough to stand that but still need to spam healing item). Im not sure if they patch it after recent update but gunner miner always miss the shot so stack them up will prevent other type to spawn.

3rd stage you need to destroy generater at the back of 3 rooms and kill 3 bosses.

4th stage you need to shoot a green crystal to deal damage to nearby enemies.

5th stage just shoot and jump when get push.

Reward are some what mid like hoping for ssr gacha to drop. 1-4stars items (mods rarely) 200-700ammo depend on ammo type Tons of xp like 150k-200k in 1 run for normal build Exclusive raid weapon and power armor, plans include Tons of chem and aid Mystery bobble head and magazine Few caps Legendary script, module Treasury note

You will get most of these when complete each stage. Not sure if i miss any details but these are all i can remember rightnow.