- Getting all stars in a sub-area is well worth it as grants a permanent stat increase to all crew (+1 move, +1 health, etc.)
- The first area is blocked off for a while after the first boss fight/getting the equipment which lets you submerge.
- There is one unique missable weapon in the game, during the chase sequence after the previously mentioned boss, take the whirlpool to the lighthouse.
- There is an upgrade at the start of the second area which massively boosts xp gain for a class up to level 2, even a single low level mission will take a character from level 0 to 2 after the upgrade. The game encourages switching classes, but consider waiting until after this is obtained.
- It takes a lot of XP to go from level 4 to 5 (max) and I didn't always feel the skill unlocked was worth the wait. Consider looking them up before committing early/mid game.