Fast-paced gameplay with incredibly fun movement mechanics
Tons of variety in weapons and Warframes
While the game has a premium currency, buying it is not required to obtain 100% completion as far as weapons and Warframes go, and it's designed to avoid being pay-to-win
Very friendly and supportive playerbase
Highly interactive developers (they even hold official livestreams on a regular basis)
Suffers from a particularly severe case of early game hell. New players will have a horrid time without looking up guides, since the game hardly explains anything aside from the very basics, and what little equipment is given is utterly useless in the long run
Some mechanics and gamemodes such as Archwing are severely underdeveloped
Mid-high to high-level play is plagued by various demonic spiders
Misc.:
Premium currency (Platinum) is required to obtain inventory slots for weapons and Warframes. You can trade items for Platinum among other players, but it'll take a while before you'll have anything really worth selling
You WILL end up grinding for materials/mods/experience/etc. at some point. Whether you think it's relaxing or tedious, YMMV
In conclusion, if you can get past the terrible early game and invest a bit of time into it, Warframe is by far one of the best free-to-play games of this generation. While it suffers from a tedious meta-game of grinding and has a few unpolished mechanics, there's a lot of good to be enjoyed. Fun gameplay, great community, supportive devs, constant updates all help keep the game fresh and enjoyable.
Great Game That Makes a Terrible First Impression
The Good:
The Bad:
Misc.:
In conclusion, if you can get past the terrible early game and invest a bit of time into it, Warframe is by far one of the best free-to-play games of this generation. While it suffers from a tedious meta-game of grinding and has a few unpolished mechanics, there's a lot of good to be enjoyed. Fun gameplay, great community, supportive devs, constant updates all help keep the game fresh and enjoyable.