In our group of gamers, who are mostly relatively new to even a d20 system, we have an experienced role player and GM. His favourite system is rolemaster. After a while he convinced a few of us to give the system a go, with him as GM. His game setting is an open one, where there's no over all arc or campaign but it's set as a mercenary collection. We, as players, can have a pool of characters and select missions. Personally, I love the concept and am quite enjoying the freedom that rolemaster provides in contrast to the d20 systems we're used to. The problem, however, is that we still try and play, through force of habit, like we would in pathfinder or 5th ed. Classic example being the whole "we see enemies and try walk in and hit one of them" scenario. This, in a d20 system, is a reasonable act. In rolemaster, however, seems to always make bad things happen. Having learnt that lesson, I was wondering: is there anything else we should know, in order to postpone the inevitable deaths of our characters?