Roboquest

• The purple orbs are (bonus) exp, but they're ALSO health orbs. If you have red health in addition to your normal health, picking up purple orbs will contribute to healing that. It makes using close range guns less punishing than they initially seem when you know that.

• Hitting weak points on enemies is a guaranteed critical hit, both for damage and for perks that trigger off of crits. There are a few enemies I haven't found weak spots for, but almost all of them (including the bosses) have them.

• Pay attention to your map, it's not really going to lie to you. If it says there's a treasure room on the other side of that wall, there's a way to get to it.

• Keys to unlock doors persist through death, and there are some you're straight up not going to be able to use on the same run you get them (because the door they unlock is before you get the key). Any door but the final boss door stays unlocked once you do it, so don't fear "losing" a key you've picked up. The final boss door's unlock is part of the level it exists in, so you have to do it each time.