You might want to look into some armor strip if you want to do damage to the grineer more quickly. Unairu operator, Saryn, Mag, Necros, Hildryn, Ember, Vauban, Xaku are some that can do it without augments. If you have access to helminth you can put something like Necros terrify on anybody and you're good to go.
For survivability, you can use certain frames or look into shield gating(augur mods and/or brief respite). What can also help quite a bit is jumping and rolling around - makes it so fewer bullets hit you.
After posting this, it seems like using newline (\ or two spaces) is a bit off. When placed after tables and codeblocks it displays the backslash. And the two spaces method doesn't actually do anything. A workaround is that you can put and it will insert a space and newline.