Monster Hunter Rise explains the basics of Rampage mode quite well, and the battles start smoothly. But things will get tougher with the arrival of more fearsome monsters. Moreover, your performance will directly influence your score, and by extension, the rewards you get at the end.
Solo vs. Multiplayer
Rampage quests can be handled solo, and you can still get a good score once the game mode is mastered. The first few advanced Rampage quests are likely to be quite difficult, though, and even after that, it can be frustrating at times.
If you're playing multiplayer, the monsters will divide their attention between all the hunters, instead of having the whole horde focused on you. This makes a big difference, especially on the boss.
Finally, some of the bonus objectives are much easier to complete in a group.
As before every hunt, remember to eat dangos before you leave. Adapt your selection to the monsters present.
Don't neglect the consumables either — but don't bother with trap. Some medicines are very welcome since there are quite a few poison-spitting flying monsters. Life dust that heals all nearby hunters is also great in multiplayer.
There is always a preparation area in which you start, and at least one area to defend. If you face a three wave Rampage, a second defence zone is added behind. There are at least 4 different cards for the Fortress, and their order varies. Sometimes the card that acts as the first zone is used for the second, and vice versa.
Each card has its advantages and disadvantages, and you will have to take them into account when placing your defenses.
Don't forget that the supply chest contains a Teleportogen, using it will take you back to the preparation room, allowing you to enter directly into the middle of the second area by taking the right door. This is faster than chasing monsters on Palamute's back when the door is destroyed.