What can you expect from the game: action-platforming that the original games were, but introduced with a host of features that turn the game into a more stealthy and tactical oriented game with some rogue-lite features on top.
The idea is that you are free to tackle this game in the way you like: Sneak around and take your time to take down the enemies? you can do that! Prefer to rush through the game guns blazing? You’re THAT good? Well go for it!
My tip? Try a little bit of both, and be more tactical about your approach. Often it’s smarter to not engage with a large group of enemies, and rather take them out one by one or with a well placed sticky bomb, or land mine. In other situations going full on Rambo-mode is probably the best chance of survival and get to the chopper!