Start with the official basics
The official Roblox description sets the core loop: choose a class, bring friends, unlock powerful guns, and survive the monkey horde. Begin by learning the controls and objective shown in the current experience, then change one loadout choice at a time.
Practical check
Keep a short note of what changed between attempts. If a class or weapon choice helps, repeat the same route once before deciding it is consistently better.
Source
Roblox — Survive a Million Monkeys
Independent fan-made guide. Not affiliated with Roblox or the game creator. Game details and codes can change; verify current information on the official experience page.